Ans. Question 2. In general an acid reacts with a metal to produce a salt and hydrogen gas. By the end of the lesson, students should be able readily to draw the conclusion: Metal + acid … The yellow colour of nitric acid obtained in the laboratory is removed by babbling air through it. The method of identification of the product i.e. Fe (OH)3 + 3HNO3→ Fe (NO3)3 + 3H2O. Question 3. During the reaction it produces Nitrous acid and Zinc nitrate. This is because nitric acid is a strong oxidising agent. 202 Qs. However, the reaction usually is performed by reacting iron oxide with aluminum: Fe 2 O 3 + 2Al → 2Fe + Al 2 O 3 + heat and light If you want a truly stunning display, try placing the mixture inside a block of dry ice and then lighting the mixture. (2) State why the temperature of the reaction mixture of HNO3 is not allowed to rise above 200°C. Extra Questions for Class 10 Science Chapter 3 Metals and Non-metals with Answers Solutions. Write an equation for the following reaction: Copper and concentrated nitric acid. Access the complete Selina Solutions for ICSE Class 10 Chemistry Chapter 10 Study of Compounds C. Nitric Acid at TopperLearning. Sodium nitrate reacts with — (concentrated / dilute) sulphuric acid to produce nitric acid. Brown coloured pungent smelling gas – nitrogen dioxide (NO. Question 1. According to Divers, nitrous acid is not produced in appreciable amounts, because further reduction occurs which is due to the action of nascent hydrogen: Concentrated nitric acid vapours – condense and are collected in the water-cooled receiver. C + 4HNO 3 → CO 2 + 2H 2 O + 4NO 2 (b) Copper when reacts with dilute HNO3 forms Copper nitrate, Nitric oxide and water. Question 1. HNO3 decomposes by the action of sunlight to give brown coloured NO2 The brown coloured NO2 dissolves in cone. Question 2. Convert nitric acid to sulphuric acid using a non-metal. Reaction of zinc with dilute nitric acid gives _____ gas. HNO, Three chemical products manufactured from nitric acid. Identify the acid — The acid which is prepared by cata­lytic oxidation of ammonia. Answer: All glass apparatus is used in the laboratory preparation of nitric acid. ), Fertilizers (Ammonium nitrate, calcium ammonium nitrate or C.A.N.). Answer: Metals low in activity series can be obtained by reducing their sulphides or oxides by heating. Magnesium, manganese, and zinc liberate H 2 : Mg + 2 HNO 3 → Mg (NO 3) 2 + H 2 (Magnesium nitrate) In what way is dilute nitric acid different from other acids when it reacts with metals. Nitric acid, as a rule, does not carry on as an acid with metals to shape the comparing salt and free hydrogen. nitric acid) in which nitric acid……….. (reduces/oxidises) hydrochloric acid to chlorine. It oxidises the hydrogen gas to form water. Answer: Hot and cone, nitric acid will oxidises sulphur directly to sulphuric acid. Give a balanced equation for the reactions: Dilute nitric acid and Copper carbonate. Write the equation for the reaction of dilute nitric acid with copper. 6FeSO4 +3H2SO4 + 2HNO3 (dil. ) Question 7. Question 3. Choose the correct answer from the choices given – The brown ring test is used for detection of: (A) C02–3 (B) NO-3 (c) SO23– (D) cl-. Passivity can be removed by rubbing the surface layer with the sand paper or by treating with strong reducing agent. The p-Block Elements. Nitric acid is a strong oxidising agent. (zinc/copper/iron) passive or inactive. → 3Fe2(SO4)3 + 4H2O +2NO The nitric oxide so formed reacts wtih more of iron(II) sulphate to form nitrosoferrous sulphate, which appears in the form of brown ring at the junction of liquids. Nitric acid is a powerful oxidising agent and hence corrodes rubber or any other stoppers to avoid corrosion, we use all glass apparatus. Give reasons for the following: Question 6. Ans: Nitric acid is strong oxidizing agent thus it can oxidize the hydrogen gas liberated in the reaction into water. Hope given New Simplified Chemistry Class 10 ICSE Solutions Nitric Acids helpful to you. Answer: Nitric acid, Question 4. 05. dilute nitric acid is generally considered a typical acid but not so in its reaction with metals. (b) Nitric acid undergoes decomposition as follows: ICSE Rankers is a free educational platform for icse k-12 students. By the end of the lesson, students should be able readily to draw the conclusion: Metal + acid … dissolve in nitric acid. 4. Question 10. Question 2. Identify the gas evolved when: Question 2. Answer: (A) Cone, sulphuric acid (B) Potassium nitrate (Nitre). Acid Base Reaction with Metal - Experiment: Class 10 Science Answer: Question 4. State one observation for the following: Zinc nitrate crystals are strongly heated. It attacks rubber and wooden corks. H2SO4 2. concentrated hydrochloric acid is not used as a reactant in the laboratory preparation. Silver reacts with nitric acid to give silver nitrate (AgNO 3), NO 2 and H 2 O. For refinning of noble metals like gold, platinum etc. nitric acid. Solution 3 (2006). Answer: Cu + 4HNO3 → Cu(NO3)2 + 2H2O + 2NO2, Question 4. Give reasons for the following: Iron is rendered passive with fuming nitric acid. Write an equation to show how nitric acid undergoes decomposition. The reaction of……….. (calcium carbonate / calcium oxide/ calcium sulphite) with dilute nitric acid is an example of a neutralization reaction. Name a solution which gives nitrogen dioxide with copper. Reaction with metals: To give nitrates and nascent hydrogen: M + HNO 3 ---> metal nitrates + [H] + This nascent hydrogen can bring about reduction of substance: Example: Please note certain metals like chromium, aluminium do not dissolve in nitric acid due to formation of passive layer of oxide film on it which prevents further reaction. In particular dilute nitric acid (< 0.5 M) does produce hydrogen with moderately reactive metals such as magnesium and zinc, even though reactions are different at higher concentrations, and with other metals. Unlike other dilute acids only very dilute nitric acid (1%) reacts exclusively with Magnesium or … Answer: 3Cu + 8HNO3 → 3Cu(NO3)2 + 4H2O + 2NO. Question 17. Cu (s) + H 2 SO 4 (aq) ——> no reaction. Excess of air carries the reactions in forward direction as oxygen is needed in all the three reactions, leading to the formation of nitric acid. State why the unstable brown ring decomposes completely on disturbing. Cu + 4HNO3 (cone.) Thus, if the temperature is allowed to go beyond 200°C, the product (HNO3) obtained is not pure (colourless). (b) A freshly prepared ferrous sulphate solution is used because on exposure to the atmosphere, it is oxidized to ferric sulphate which will not give the brown ring. H2SO4 4.Fe2(SO4)3 CO2. Name the gas produced when copper reacts with concentrated nitric acid. Five different products can be retrieved with the help of the device. Nitric acid on exposure to sunlight, slowly decomposes to form nitrogen dioxide gas which is reddish brown in color/. Metal oxides are basic in nature. Answer: In the presence of sunlight nitric acid decomposes even at room temperature to give nitrogen dioxide, water and oxygen. (c) Conc. Nitric acid combines with protein of the skin forming a yellow compound Xanthoproteic acid, stains skin yellow. Fill in the blank from the choices given in the bracket: Question 1. Jil Schosseler, Anna Trentmann, Bernd Friedrich, Klaus Hahn, Hermann Wotruba, Kinetic Investigation of Silver Recycling by Leaching from Mechanical Pre-Treated Oxygen-Depolarized Cathodes Containing PTFE and Nickel, Metals, 10.3390/met9020187, 9, 2, (187), (2019). use of low temp, in the conversion of NO to NO. Question 1. Question 4. Question 2. Question 4. Answer: Question 6. Write the equations for the following reaction : Between copper and concentrated nitric acid. Answer: Formation of a hard residual crust of the corresponding sulphate [Na2SO4 or K2SO4] which being a -poor conductor of heat, sticks to the glass and cannot be easily removed from the apparatus. State two relevant observations for : Lead nitrate crys­tals are heated in a hard glass test tube. A mineral acid obtained from cone, nitric acid on reaction with a non-metal is……….. (hydrochloric acid / sulphuric acid / carbonic acid). Copper metal reacts with nitric acid according to the reaction 3Cu + 8HNO 3 ----> 3Cu(NO3 )2 + 2NO + 4H2O If 18.75 g Cu(NO3 )2 is eventually obtained, then how many grams of nitric oxide (NO) would have also formed according to the preceeding equation. Question 1. 5. Question 5. Calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of the metal. Question 5. State the cation responsible for turning moist neutral litmus red on reaction with dil. ... Aluminium is a reactive metal , yet is is used to make utensils for cooking. What compounds are required for the laboratory preparation of nitric acid. Answer: Cu + 4HNO3 (cone.) Class 10 Class 12. Question 3. Answer: Nitric acid works as an oxidising agent. When a metal react with dilute nitric acid,then hydrogen gas is not evolved.Nitric acid is a strong oxidising agent.As soon as hydrogen gas is formed in reaction between metal and dilute nitric acid,the nitric acid oxidises this hydrogen to water.Nitric acid itself is reduced to nitrogen oxides such as nitrogen monoxide,dinitrogen monoxide. All the solutions of - Chemistry explained in detail by experts to help students prepare for their Maharashtra exams. This salt gives nitrogen dioxide on heating. State how addition of nitric acid to acidified FeSO, serves as a test for the former. Silver is oxidized to +1 oxidation state. Explain why only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate. Give examples, alongwith equations to illustrate the reaction of the add. The gas produced by the action of dilute nitric acid on copper. Answer: [NO–] Nitrate, Question 2. Ans. If the HNO3 is concentrated the gas produced is a mixture of oxides of nitrogen, because concentrated nitric acid is a powerful oxidizing agent and can oxidize free hydrogen to water. In this reaction, salt and water are formed. Name the gas evolved (formula is not acceptable). Unlike other dilute acids only very dilute nitric acid (1%) reacts exclusively with Magnesium or … In redox reactions of metals with acid, the acid concentration and temperature change. Answer: Sodium nitrate reacts with concentrated sulphuric acid to produce nitric acid. dilute nitric acid is generally considered a typical acid but not so in its reaction with metals. acid). Choose from the list substances – Acetylence gas, aqua fortis, coke, brass, barium chloride, bronze, platinum. Saw dust is organic in nature. Nitric acid obtained in laboratory is pale yellow in colour. In Latin, cop­per is known as cuprum, and its atom­ic num­ber is 29. 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