(ii) Write the equation for the action of heat on L. (iii) Write the equation for the reaction between the solution of L and the gas N. Answer: (i) L is copper nitrate. Answer: The heat produced by burning of magnesium is quite sufficient to decompose nitric oxide into nitrogen and oxygen. The reaction of nitrogen and hydrogen is a reversible reaction hence ammonia is removed from the reaction vessel from time to time by liquefaction under high pressure, so that the reaction proceeds in the forward direction. Silver nitrate solution when added to dil. Why ? Sulphuric acid, B-Potassium nitrate or Sodium nitrate, C-Nitric acid. Let's take a look at this chemical equation. (b) Obtained from the atmosphere. Question 19: The mixture of nitrogen and hydrogen gases entering the catalyst chamber must be pure. (iv) Name the drying agent used. Answer: (i) Dilute nitric acid reacts with magnesium metal to liberate hydrogen gas which bums with a pale blue flame and a pop sound and magnesium nitrate is formed. Answer: Cone. Answer: Quick lime is basic in nature and hence does not react with ammonia, which is also basic in nature, whereas all other drying agents are acidic in nature and hence react with ammonia. NaHCO_3 3. Hydrogen and chlorine react to make HCl. (ii) Briefly describe the importance of this reaction in industry. Question 22: How will you show that nitric arid contains : (i) Hydrogen (ii) Nitrogen (iii) Oxygen ? 3. By repeating this process, the air can be liquified. (ii) A compound X is dissolved in the ammonia solution to give a deep blue coloured solution, write the name of the compound having deep blue colours ? Any hydrogen initially produced is at once oxidised by more of the acid to water. Question 1: (i) Name (a) the ammonium salt A (b) alkaline gas C. (ii) How the conversion D is carried out ? (ii) (a) Extremely soluble. (ii) D is mixed with hydrogen in the ratio of 1 : 3, compressed to a pressure of 200 to 500 atmosphere and passes over a catalyst (iron) heated to 450 to 500°C. K2SO_4 4. Hydroxide ion (OH–). Mg + 2HNO3 (Dil)   ⶠ Mg(NO3)2 + H2 â (ii) Nitric arid when heated with copper turnings, produces brown fumes of nitrogen dioxide, which are passed over red hot iron filings. The sodium metal produced in the reaction is highly reactive and potentially explosive, so it is removed in a reaction with excess KNO_3(s) that produces K_2O(s) and Na_2O(s) and additional nitrogen. For combustion reactions, the technique is to balance the carbon (C) atoms, followed by the hydrogen (H) atoms and then the oxygen (O) atoms. Write the balanced equations (molecular equation, complete ionic equation, and net ionic equation) for the reactions that occur when the following aqueous solutions are mixed. After you are finished, you should be able to: To unlock this lesson you must be a Study.com Member. Nitrogen dioxide is dissolved in water, in the presence of oxygen, to form nitric acid. 's' : ''}}. Liquid ammonia is liquified ammonia and is available in cylinders. Earn Transferable Credit & Get your Degree. What metal ion is present in A ? (ii) Give one example of a reaction between the above two gases which produces a solid compound. (i) The burning metal which combines directly with nitrogen. The property of cone. Answer: (i) (ii) The principles involved in Haber’s Process are : In this process, a mixture of pure, dry nitrogen and hydrogen in the ratio of 1 : 3 is compressed to a pressure of 200 to 900 atmospheres. A chemical equation shows us the substances involved in a chemical reaction - the substances that react (reactants) and the substances that are produced (products). Question 5: Aqueous solution of ammonia gives a pungent smell. Next, we balance the Na and Cl atoms on both sides by putting a coefficient of 6 in front of NaCl. 34. Question 4: What are the necessary conditions for getting maximum yield of ammonia ? Recall how the law of conservation of mass requires a balanced chemical equation, State the steps to balance a chemical equation. 19. The number of the atoms is not balanced on both sides. The coefficients will tell you any ratio of molecules of reactant and product. H2SO4 for the preparation of cone. (i) Name A (a liquid), B (a solid) and C (a liquid). Chemical reactions are an integral part of technology, of culture, and indeed of life itself.Burning fuels, smelting iron, making glass and pottery, brewing beer, and making wine and cheese are among many examples of activities incorporating chemical reactions that have been known and used for thousands of years. Solution B is blue in colour. Question 15: Concentrated nitric acid fumes when kept open. Potassium nitrate find concentrated sulphuric acid. (iii) Ostwald process for the manufacture of nitric acid and the catalyst used is platinum gauze. Mg + 2NHO3  ⶠ Mg(NO3)2 + H2 â (b) Dilute nitric acid reacts with marble pieces to liberate carbon dioxide gas and calcium nitrate is formed. The technique is to treat the whole polyatomic ion as if it is only one atom. (ii) Why commercial nitric acid is brown ? (v) Ammonia. | PBL Ideas & Lesson Plans, Algebra for Teachers: Professional Development, UExcel Life Span Developmental Psychology: Study Guide & Test Prep, 8th Grade World History: Enrichment Program, Essay Writing for 12th Grade: Help and Review, Algebra II - Complex and Imaginary Numbers Review: Tutoring Solution, Quiz & Worksheet - Building Students' Logical Reasoning & Scientific Problem Solving, Quiz & Worksheet - Pre-Industrial, Industrial & Post-Industrial Economic Activity, Europe & Eurasia: Geography of the Land Mass, What is the CFA Exam? (ii) Name the compound normally used as a drying agent during the process. 12. (iii) What is the special feature of the apparatus that is used in the laboratory preparation of nitric acid ? Practice always makes perfect. This means that the number of different atoms involved in the substances reacting must remain unchanged after the reaction occurs. Give examples, alongwith equations to illustrate the reaction of the add. Answer: Nitric acid is highly corrosive and hence destroys rubber and cork of the apparatus. HNO3 from KNO3 because cone. The equation above is now balanced. Ferric hydroxide reacts with nitric acid. We provide step by step Solutions for ICSE Chemistry Class 10 Solutions Pdf. You can download the Class 10 Chemistry ICSE Textbook Solutions with Free PDF download option. Carbonic add further decomposes to carbon dioxide. (c) How is temperature maintained in above process ? 4HNO3   ⶠ 4NO2 + 2H2O + O2. The gas is alkaline in nature. (ii) Copper reacts with hot and concentrated nitric acid to form copper nitrate, water and nitrogen dioxide.gas, which has reddish brown fumes and a pungent smell is liberated. Question 11: In the laboratory preparation of nitric acid, it can be obtained below 200°C or above 200°C, but the lower temperature is preferred. 28. Question 23: During a thunder storm, the rain water contains traces of nitric acid. Fe/Mo) at 450° to 500°C. This is a reaction between methane (CH4) and oxygen (O2), producing carbon dioxide (CO2) and water (H2O). According to the law of conservation of mass, the mass of the reactants should be equal to the mass of the products when a chemical reaction occurs. (iv) It is highly soluble in water. Answer: Nitric oxide is oxidized by the oxygen of air to form brown coloured nitrogen dioxide : Question 25: Nitric oxide gives a black colour with ferrous sulphate solution. Catalytic oxidationof ammmonia. There are 4 hydrogen (H) atoms on the reactants side and 2 hydrogen (H) atoms on the products side. (c) It turns phenolphthalein solution pink. This pale blue precipitate dissolves in excess of ammonium hydroxide to give inky blue colouration. (iii) In the reaction of the catalytic oxidation of ammonia the catalyst glows red hot, Why ? Since there is no coefficient in front of N2, that means the coefficient is equal to 1. Let's take a look at an equation representing a chemical reaction: In this chemical reaction, nitrogen (N2) reacts with hydrogen (H) to produce ammonia (NH3).The reactants are nitrogen and hydrogen, and the product is ammonia. We do this by putting a coefficient of 3 in front of C on the reactants side. Answer: This is because ammonia on dissolving in water furnishes ammonium (NH+) ions and hydroxyl (OH–) ions. Ammonia with lead oxide. Question 10: During the manufacture of nitric acid by Ostwald’s process excess of oxygen is taken. The hydrogen chloride formed removes the oxides of metals and thus cleans the metal surfaces before soldering, tinning, etc. Question 5: (i) Draw a neat sketch for.the manufacture of ammonia by Haber’s process. Question 13: Only all-glass apparatus should be used for the preparation of nitric acid. Thus, nitric acid can be prepared by the catalytic oxidation of ammonia. © copyright 2003-2021 Study.com. (iii) Introduce the given gas in the atmosphere of oxygen and if reddish brown fumes are produced, then the given sample of gas is nitric oxide and if no brown fumes are produced and the mixture remains colourless, then the gas is nitrous oxide. Question 17: Iron is rendered passive with fuming nitric acid. 5. | {{course.flashcardSetCount}} {{courseNav.course.mDynamicIntFields.lessonCount}}, The Arrhenius Definition of Acids and Bases, The Bronsted-Lowry and Lewis Definition of Acids and Bases, Dissociation Constant and Autoionization of Water, The pH Scale: Calculating the pH of a Solution, Coordination Chemistry: Bonding in Coordinated Compounds, Precipitation Reactions: Predicting Precipitates and Net Ionic Equations, Assigning Oxidation Numbers to Elements in a Chemical Formula, Balancing Redox Reactions and Identifying Oxidizing and Reducing Agents, The Activity Series: Predicting Products of Single Displacement Reactions, Electrochemical Cells and Electrochemistry, Writing and Balancing Combustion Reactions, What is a Conjugate Acid? (c) By titration or neutralisation. Create your account, {{courseNav.course.topics.length}} chapters | Question 4: Quick lime is the only drying agent used for drying ammonia gas. No change will be observed with hydroxide ion. Action of heat on ammonium nitrate. Answer: (i) Ammonia. Why ? (iii) How is ammonia gas collected ? HCl is not used in place of cone. 2. (b) Nitrogen. Log in or sign up to add this lesson to a Custom Course. 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Participation Certificate | Format, Samples, Examples and Importance of Participation Certificate, 10 Lines on Elephant for Students and Children in English, 10 Lines on Rabindranath Tagore for Students and Children in English. Question 7: Copy and complete the following table relating to the important industrial process. This is called catalytic oxidation of ammonia. (iii) It is a characteristic of strong acids that when dilute, they react with the more electropositive metals, liberating hydrogen gas. Ammonia can be obtained from it by boiling. (v) Ammonia is a reducing agent. Rewrite the correct statement with the missing word/s: Magnesium nitride reacts with water to liberate ammonia. Question 14: (i) Give the balanced equations for laboratory preparation of nitric acid and describe the reaction. The polyatomic ion in this case is PO4 (green). Explain ? Chlorine reacts with excess of ammonia. (iii) How is the gas being collected ? Question 7: Aqueous solution of ammonia turns red litmus blue. Question 18: In Haber’s process before the gases are allowed to enter the oxidation chamber, the gases are sufficiently cooled. Zn + 2H+ ⶠ Zn2+ + H2 This reaction can not occur with nitric acid as it is a powerful oxidising agent. CaCO3 + 2HNO3  ⶠ Ca(NO3)2 + H2O + CO2 â (ii) (a) When carbon is heated with concentrated nitric acid, it is oxidized to carbonic add and the acid is reduced to nitrogen dioxide and water. We do this by putting a coefficient of 2 in front of Al. Try refreshing the page, or contact customer support. Question 5: (i) What are the products formed when ammonia is oxidised with copper oxide ? Question: 1. So, the gases that are to be used should be pure and dry. (d) Write the equation for conversion of F and G. (iv) Name the coloured gas and the colourless gas. (ii) Write the equation for the reaction that takes place when gas B is passed over- heated copper oxide. Why ? Answer: The mixture of nitrogen and hydrogen gases entering the catalyst chamber must be pure, because the presence of carbon dioxide, carbon monoxide and traces of sulphur compound poison the catalyst. (iii) Nitric arid, when heated alone, is decomposed into a reddish brown coloured gas nitrogen dioxide, steam and a colourless, odourless gas oxygen, which rekindles a glowing splinter. Catalytic oxidation of ammonia. 8. State all the conditions like temperature, pressure and catalyst. Ammonia bums in oxygen with a greenish yellow flame producing water vapour and nitrogen. Why ? - Levels I, II & III, What to Do When You're Rejected from All Colleges, Study.com MTEL Scholarship: Application Form & Information, Study.com's Workforce College Accelerator for Employees, Tech and Engineering - Questions & Answers, Health and Medicine - Questions & Answers, The balanced chemical equation for the reaction between hydrogen sulfide and oxygen is: 2H_2S(g) + 3O_2(g) ? Question 16: (i) Among the elements chlorine, nitrogen and sulphur select: (a) The least reactive. Low temp. Question 14: Pure nitric acid take on a yellowish-brown colour when exposed to light. HNO3 on Carbon. (b) Ammonia solution in water turns red litmus blue and phenolphthalein pink. This lone pair of electron leads to the formation of ammonium ion. Answer: When pure HNO3 is exposed to light it decomposes to give a reddish brown NO2 gas which dissolves in undecomposed nitric acid to give yellowish brown colour. If there is no coefficient in front of the chemical formula, that means the coefficient is equal to one. 26. (iv) Because above 200°C nitric acid will decompose. 27. To do this, we need to put a coefficient of 2 in front Fe2O3 and a coefficient of 3 in front of CO2. Magnesium heated in nitrogen. (a) During thunder and lightning (b) By symbiotic bacteria (iii) (a) It turns red litmus solution to blue. Laboratory bench reagent is a diluted solution of liquor ammonia. Answer: Liquid ammonia is a refrigerant as it has high latent heat of vaporisation equal to 5700 cals/mole and a low boiling point. 20. The next step is to balance the magnesium (Mg) and sodium (Na) and chlorine (Cl) atoms. Laboratory preparation of nitric acid. Why ? Why ? (i) What is the name of gas B ? Thus, it is used in analytical analysis of salts in laboratory. 25. Brown ring is due to the formation of nitrosonium pentaqua iron (I) sulphate [Fe+ (NO+) (H2O)5] SO4, which is an octahedral complex compound. In this case, the carbon (C) atoms are already balanced. (iii) Nitric oxide gas and nitrous oxide gas. HNO3 on Iodine. Dilute nitric add and sodium carbonate. Ammonia with copper oxide. (iii) How can you get ‘liquid air’ ? Answer: The gases are cooled so that the complete oxidation of nitric oxide takes place or the rate of forward reaction increases or to minimize the decomposition of nitrogen dioxide. 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In what way is dilute Nitric acid different from other acids when it reacts with metals ? Ammonia bums in oxygen with a greenish yellow flame producing water vapour and nitrogen. H2SO4 along the sides of the test tube. A balanced chemical equation occurs when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side. Why? (ii) An oxidizing agent. (c) The oxidation of ammonia to nitric oxide is exothermic reaction and once the reaction is started it maintains the temperature of the platinum gauze. Give the reason. (ii) Conversion of atmospheric nitrogen into soluble nitrogenous Compounds which can be easily absorbed by the roots of the plants. State three ways in which you can identify the gas. If two atoms must combine at a 1 to 1 ratio, but there is an unequal amount of 1 atom, then the reaction will stop when the atom with less quantity runs out. c. Give a balanced equation for the reaction: Ammonia and oxygen in the presence of a catalyst. (iv) Why should the temperature of the reaction mixture of nitric acid not be allowed to rise above 200°C ? Finally, this air is compressed, cooled and suddenly allowed to expand. To balance the chemical equation above, we need to make use of coefficients. The next step is to balance the hydrogen (H) atoms by putting a coefficient of 3 in front of H2. HNO3 on Sulphur. Once we do that, the number of nitrogen (N) atoms on both sides is balanced. Action of heat on Ammonium nitrate. Question 11: Oxidation of ammonia under certain conditions is represented by the following equation. 21. To do that, we put a coefficient of 2 in front of Na3PO4. A dark , brown ring is formed at junctions of two liquids. Therefore, the removal of these catalyst poison from nitrogen and hydrogen is very essential. APlusTopper.com provides ICSE Solutions for Class 10 Chemistry Chapter 9 Study of Compounds: Ammonia and Nitric Acid for ICSE Board Examinations. 4NH3 + 3O2  ⶠ 2N2 + 6H2O (ii) Ammonia, when reacts with oxygen in presence of platinum (as catalyst) at 800°C, ammonia is oxidised to nitric oxide (NO). Ammonium ion and hydroxide ion. Give reason. (ii) Catalyst: A catalyst is used to accelerate the reaction at optimum temperature. (iv) Ammonia is dried by passing it through quick lime (CaO) and is collected by downward displacement of air. Answer: Aluminum metal is not attacked by nitric acid of any concentration because of the thin and unreactive protective layer of aluminum oxide formed on the metallic surface due to the reaction of aluminium metal with oxygen of air. Sciences, Culinary Arts and Personal 10. 5. 33. 18. The reaction is irreversible and highly exothermic. 3Mg + N2  ⶠ Mg3N2 (ii) Reducing property of Ammonia, as it reduces CuO to Cu in reaction. Question 12: Cone. Give reason. The reaction shown is a combustion reaction: a compound reacts with oxygen and produces carbon dioxide and water. 3. Name the cation present in B. to find the limiting reagent, take the moles of each substance and divide it by its coefficient in the balanced equation. Count the atoms of each element in the reactants and the products. In the nuclear industry, chlorine trifluoride is used to prepare uranium hexafluoride, a volatile compound of uranium used in the separation of uranium isotopes. (b) It reacts with adds to form salt and water. S + 6HNO3 (Conc)  ⶠ H2SO4 + 6NO2 + 2H2O. Answer: When ammonium chloride is heated and rubbed with the metal, the ammonia formed removes grease, oil, etc. and when added to dil. NH3 + H2O  â  NH4+ + OH–. 30. Answer: Question 8: Copy and complete the following table relating to important industrial process: Question 1: Ammonia cannot be obtained in laboratory from ammonium nitrate and sodium hydroxide. Answer: This is because ammonium nitrate on heating decomposes explosively with the formation of nitrous oxide and water. (iv) During laboratory preparation how is ammonia dried and collected ? Nitric add, Ammonium hydroxide. Question 6: Ammonia solution is used as laboratory reagent to identify metal ions. 35. Why ? Sociology 110: Cultural Studies & Diversity in the U.S. Overview of Blood & the Cardiovascular System, Electrolyte, Water & pH Balance in the Body, Sexual Reproduction & the Reproductive System, Accessory Organs of the Gastrointestinal System. (ii) 3CuO + 2NH3  ⶠ 3Cu + 3H2O + N2 â. Answer: This is because of the formation of reddish brown layer of iron oxide which prevents its further reaction with the acid. Question 20: Aluminium does not react with nitric acid of any concentration. (iv) The black mass changes t0 reddish powdery mass. Answer: ICSE Previous Year Question Papers Class 10, ICSE Solutions for Class 10 Chemistry – Study of Compounds: Ammonia and Nitric Acid, Concise Mathematics Class 10 ICSE Solutions, Concise Chemistry Class 10 ICSE Solutions, Concise Mathematics Class 9 ICSE Solutions, Letter of Administration | Importance, Application Process, Details and Guidelines of Letter of Admission. Potassium sulphate is deposited as a hard, solid mass in the retort, which is difficult to remove. Why ? (iii) By downward displacement of air. (iii) What important industrial process starts with reaction between ammonia and oxygen. Download Formulae Handbook For ICSE Class 9 and 10. When as N, which has a rotten egg smell, is passed through a solution of L a black precipitate is formed. , this air is passed over- heated copper oxide passed through a condenser, C 2 H,... Letter?, Template, Samples and How to Write a relevant equation for the preparation of ammonia certain... You should be pure nitrogen occurs, naturally > Ca ( OH ) 2 ] in ammonia molecule there a. Because of the chemical reaction, a chemical reaction, our polyatomic ion, and on the products,... All other trademarks and copyrights are the products side in temperature, NOC for Students, NOC for Vehicle NOC. The polyatomic ions on both sides 8: Name one element in element! Colour because it is alkaline in nature reaction that occurs between nitric acid with metals upon. Directly with nitrogen solution b, when a pale blue precipitate dissolves in water equations, we need to the. ( Al ) atoms and 3 hydrogen ( H ) atoms ) Tetrammine copper ( ii ) significant... An equation to show How nitric acid and describe the importance of this reaction can not oxidise the liberated to! Write a relevant equation for such a reaction between the above two gases which produces a bluish green.... Each and every step requires oxygen of conservation of mass requires a balanced chemical equation should also balanced! An equation to show that the number of hydrogen chloride, which is oxidised! Blue colouration 2H+ ⶠ 4NO + 6H2O ( i ) ( a ) the glass apparatus may break higher... Divided molybdenum, i.e Employee, NOC for Students, NOC for Employee, NOC Landlord... Divide it by its coefficient in the reactants side and 2 hydrogen H... To show How nitric acid is highly corrosive and hence destroys rubber and cork of reaction! Can you get ‘ liquid air ’ in laboratory preparation of ammonia from ammonium chloride and an aqueous of! Nitrogen ( iii ) ( a ) by bringing a wet red litmus blue which. As a refrigerant because its heat of vaporisation is 5700 calories per gram molecule the retort, which has rotten... Temperature of the catalyst used in laboratory a thunder storm, the rate expressions for this,. To Cu in reaction which reactants are used in the presence of OH– ions in presence! Roots of the compounds as needed: Name one element in the solution of ammonia in oxygen and... Nitre ( potassium nitrate ) and cone, sulphuric acid equation that relates the rate of the plants liberate gas. Relates the rate expressions for this reaction in industry dioxide dissolves in water in the presence a... Let 's take a look at a few more example equations and techniques can! Ammonia dissolves in water a liquid ) the compressed gases are sufficiently cooled reactants given the amount nitric. Process excess of oxygen gas to make use of coefficients acid ( H2SO4.... | Formats, Samples reasons: ( i ) ammonium hydroxide solution, add freshly prepared iron ( ii nitric... Application for TC in English | How to Write an application for Transfer?. Oil, etc heat of vaporisation equal to 5700 cals/mole and a low boiling point ( ). ( ii ) Briefly describe the reaction mixture of nitric acid jet of fluid, high-temperature... Form salt and water conditions of the catalytic oxidation of ammonia in oxygen: burning magnesium continues to-burn nitric... What would you obtain the compound magnesium nitride during burning of ammonia in with! Is added to ammonium ion is present in b is ammonia dried and collected, potassium or sulphate! Formed at junctions of two liquids ICSE Solutions for Class 10 chemistry Chapter 9 Study of:. Magnesium in the reactants side blue precipitate is formed litmus paper blue ( NH+ ions. Moles of ammonia by Haber ’ s process before the gases are allowed to condense to ammonium... Metal like zinc differ from the action of dil of Fe in the number of atoms the! Highly corrosive and hence destroys rubber and cork of the ammonia molecules leads to the formation of gas! Passing it through quick lime is the vapour density and nature of an aqueous solution of ammonia turns red blue! Are finished, you should be between 200 atmospheres to 900 atmospheres two ways in fixation. Of skin and flesh blue and phenolphthalein pink ) of the catalytic of! ) Among the elements chlorine, nitrogen and hydrogen is very essential is a reaction...
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