Special Case of Nitric Acid: Nitric acid does not react with metals in the same way as hydrochloric acid or sulphuric acid do. The gas produced by the action of dilute nitric acid on copper. Answer: Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O. 5. Answer: C + 4HNO3 → 2H2O + 4NO2 + CO2. Write the equation for the lab. ICSE SolutionsSelina ICSE SolutionsML Aggarwal Solutions, Viraf J Dalal Chemistry Class 10 Solutions and Answers, Simplified ChemistryEnglishMathsPhysicsChemistryBiology, Question 1. State why hydrogen is liberated when zinc reacts with dil.HCl but not with dil. Question 12. NO and N 2 O. It oxidises the H 2 produced to water and itself gets reduced to any of the nitrogen oxides (N 2 O, NO, NO 2). In the laboratory preparation of nitric acid, an all glass apparatus is used. Answer: Metals, lying above hydrogen in the electro chemical series, give hydrogen from the acid. Dilute nitric acid is generally considered a typical acid except for its reaction with metals. State your observation when (1) nitric acid is added to saw dust (2) cone, nitric acid is heated (a) in absence of copper (b) in presence of copper. Question 3. Acid Base Reaction with Metal - Experiment: Class 10 Science }. Answer: The oxidising property of nitric acid is based on the fact that when nitric acid undergoes decomposition, it yields nascent oxygen, which is very reactive. Answer: S + 6HNO3 → H2SO4 + 2H2O + 6NO2. Table of Contents. It is due to the following reasons: Question 4(2). Nitric acid affects the skin if it accidently falls on it, staining the skin yellow. Solution 3 (2006). Answer: Hot and cone, nitric acid will oxidises sulphur directly to sulphuric acid. Answer: Question 1. Nitric acid being a strong oxidising agent decomposes to give nascent oxygen, which being very reactive, oxidises organic compounds to carbon dioxide and water. During the reaction it produces Nitrous acid and Zinc nitrate. Give an equation for reaction of cone. State how addition of nitric acid to acidified FeSO, serves as a test for the former. (2) State why the temperature of the reaction mixture of HNO3 is not allowed to rise above 200°C. The reduction product depends on the dilution of the acid. Question 3. Impurities like Cu, Ag, Zn, etc. Name three chemical products manufactured from nitric acid. Question 1. Answer: (1) X = Copper nitrate [Cu(NO3)2] Y = Nitrogen gas (NO2) (2) (3) Cu(NO3)2 + H2S → CuS ↓+ 2HNO3, Question 1. Name the gas produced when copper reacts with concentrated nitric acid. Answer: With very dilute nitric acid. ; Reactions between acids and the most reactive metals will result in vigorous fizzing as hydrogen gas is rapidly produced. A: Nitrogen dioxide only B: Nitric oxide only C: Hydrogen D: Nitrogen dioxide and oxygen E: Nitrogen dioxide and carbon dioxide. Answer: Iron forms coating of its oxide and nitrate which stops further reaction. Answer: Cold, dilute nitric acid reacts with copper to form nitric oxide. 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. Buff coloured residue of PbO is obtained in the test tube. FeSO4 + NO → FeSO4.NO. Nitric acid and silver metal reaction. Correct the following statements.Copper reacts with nitric acid to produce nitrogen dioxide. Give a balanced equation for the reactions: Dilute nitric acid and Copper carbonate. It should Question 4. Extra Questions for Class 10 Science Chapter 3 Metals and Non-metals with Answers Solutions. Reaction of zinc with dilute nitric acid gives _____ gas. Question 1. Nitric acid is a powerful oxidising agent and hence corrodes rubber or any other stoppers to avoid corrosion, we use all glass apparatus. Name the gas evolved (formula is not acceptable). The yellow colour of cone, nitric acid is due to NO2 dissolved in it. Cu + 4HNO3 (cone.) Nitric acid | HNO3 | CID 944 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. In redox reactions of metals with acid, the acid concentration and temperature change. nitric acid reacts with copper to form________(Hydrogen, nitrogen dioxide, nitric oxide). Question 1. H2SO4. Get … COVID-19 is an emerging, rapidly evolving situation. Answer: In the presence of sunlight nitric acid decomposes even at room temperature to give nitrogen dioxide, water and oxygen. (c) Zinc reacts with nitric acid to form Zinc nitrate, nitric oxide and water. Sodium Bisuiphate + Nitric acid NaNO3 + H2S04 (conc.) 3Cu + 8HNO 3 → 3Cu (NO 3) 2 + 4H 2 O + 2NO S + 6HNO3 → H2SO4 + 2H2O + 6NO2, Question 1. ), Fertilizers (Ammonium nitrate, calcium ammonium nitrate or C.A.N.). Question 10. Pure cone, nitric acid or fuming nitric acid renders the metal…………. Give a reason why the brown ring does not settle down at the bottom of the test tube. P 4 +20HNO 3 → 4H 3 PO 4 + 4H 2 O + 20NO 2. Answer: All glass apparatus is used in the laboratory preparation of nitric acid. In the laboratory preparation of nitric acid from – KNO3 or NaNO3 State. e) Reaction with Metallic Sulphites. HN03 when added to copper turnings kept in a beaker. (b) Copper when reacts with dilute HNO3 forms Copper nitrate, Nitric oxide and water. State whether each reaction is an example of thermal decomposition   or thermal dissociation. (1) Dissociation (2) decomposition Answer: Question 2. 288 Views. Answer: [NO–] Nitrate, Question 2. When hot cone. Explain why only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate. Write equation for the same. Question 6 … Dilute nitric acid behaves as a typical acid in its reaction with most metals. In Latin, cop­per is known as cuprum, and its atom­ic num­ber is 29. Give reasons for the following – pertaining to the above laboratory preparation of nitric acid Question 4(1). When nitric acid is prepared by the action of concentrated sulphuric acid on potassium nitrate, what is the special feature of the apparatus used. To help you to identify X, Y and Z, you are provided with the following experimental observations. HNO 3 acid dissociate completely in the water and release hydronium ion (H 3 O +) in the water to form strong acid … Question 2. Silver is oxidized to +1 oxidation state. → Cu (NO3)2 + 2H2O + 2NO2. Question 3. Nitric acid, (HNO 3), is a colourless, fuming, and highly corrosive acid … Sodium nitrate reacts with — (concentrated / dilute) sulphuric acid to produce nitric acid. Control the temperature carefully at nearly 200 °C. The yellow colour of nitric acid obtained in the laboratory is removed by babbling air through it. Question 18. HNO3, to give it a yellow colour. Answer: Platinum. HNO3. In this reaction, salt and water are formed. Answer: Pb(NO3)2. Equation 2 4 HNO 3 → 2 H 2 O + 3O 2 + 4NO The Nitric Acid decomposes in the intense heat produced by the high concentrate Sulphuric Acid used. Question 1. Answer: Question 5. It oxidises the hydrogen gas to form water. Answer: Reddish brown gas is liberated residue is yellow when hot and white when cold. (b) Nitric acid undergoes decomposition as follows: ICSE Rankers is a free educational platform for icse k-12 students. 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). According to Divers, nitrous acid is not produced in appreciable amounts, because further reduction occurs which is due to the action of nascent hydrogen: The exothermicity of catalytic reaction helps in stopping external heating, there by saving on energy. (zinc/copper/iron) passive or inactive. Add to it – a freshly prepared saturated solution of iron [II] sulphate. The brown coloured NO2 dissolves in HNO3 to give it a yellow colour. When it is left standing in a glass bottle, concentrated nitric add appears yellow. 202 Qs. Ans: Nitric acid is strong oxidizing agent thus it can oxidize the hydrogen gas liberated in the reaction into water. Nitric acid is heated the products formed are Carbon dioxide, Nitrogen dioxide and water. From the formulae listed below, choose, one, corresponding to the salt having the given description: AgCl, CuCO3, CuSO4. Magnesium, manganese, and zinc liberate H 2 : Mg + 2 HNO 3 → Mg (NO 3) 2 + H 2 (Magnesium nitrate) Question 14. 5H2O, KNO3, NaCl, NaHSO,, Pb(NO3)2, ZnCO3, ZnSO4.7H2O. Nitric acid, as a rule, does not carry on as an acid with metals to shape the comparing salt and free hydrogen. Question 5. 10HNO 3 … Answer: Zinc displace hydrogen from dil. Metals and Non-metals Class 10 MCQs Questions with Answers. use of low temp, in the conversion of NO to NO. If the conditions are right, just about any metal will burn. Solution 1 (2008). → 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. D. N 2 O and NO 2. Question 2. asked Jan 28, 2019 in Class X Science by priya12 (-12,630 points) The reaction of nitric acid with metals depends upon the concentration of the acid. Answer: Cone. HNO3 decomposes by the action of sunlight to give brown coloured NO2 The brown coloured NO2 dissolves in cone. Similarly, phenol reacts with nitric acid in the presence of H2SO4 to give trinitrophenol (known as picric acid). This is because nitric acid is a strong oxidising agent. Question 16. State  how atmospheric nitrogen converts itself to nitric acid. Answer: Step I Step II Step III  4NO2 + 2H2O → 4HNO3. Question 5. Question 5. In this article, we have given step by step procedure to perform an experiment which will help you understand the different properties of acids.Read the article carefully to understand the aim, apparatus, procedure and the reactions taking place during the experiment. (b) Iron becomes inert when reacted with nitric acid due to the formation of extremely thin layer of insoluble metallic oxide which stops the reaction. HNO 3 reaction with water. The device utilizes a left hand and schematically indicates the product of reduction of nitric acid as a function of two factors: the activity of metal and the concentration of acid. Give reasons for the following: Question 6. Dilute nitric acid is generally considered a typical acid except for its reaction with metals. Answer: Question 3. Answer: Nitrogen dioxide. Explosives (T.N.T., picric acid, nitrocellulose etc. Question 4. The complete apparatus in the laboratory preparation does not contain parts made of rubber or cork. Zn(NO3)2 3. dissolve in nitric acid. 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. Answer: Question 6. State two conditions which affect the decomposition of nitric acid. It is a powerful oxidizing agent and the nascent oxygen oxidises hydrogen in water. Give a word equation and balanced molecular equation for the laboratory preparation of nitric acid from (1) KN03 (2) NaNO3. Cone. Answer: Cu + 4HNO3 (cone.) Answer the following questions pertaining to the brown ring test for nitric acid: Question 1. Answer. (b) When Cupric oxide reacts with dilute nitric acid, it forms Copper nitrate. Share Tweet Send [Deposit Photos] Cop­per is one of the old­est known met­als, which has been used by peo­ple from an­cient times. Saw dust is organic in nature. → H2O + 2NO2 + [O] 2HNO3 (dil.) Write a balanced equation for – Ferric hydroxide reacts with nitric acid. Nitric acid is not manufactured from atmospheric nitrogen. Question 2. Thus, it cannot be concentrated by boiling. Write a balanced equation for the reaction of cone. Silver reacts with nitric acid to give silver nitrate (AgNO 3), NO 2 and H 2 O. Answer: The complete apparatus is made of glass only – since the vapours of nitric acid being highly corrosive and attack rubber, cork, etc. Therefore, nitric acid stains skin and renders wool yellow. It should Cold, dilute, nitric acid reacts with copper to given, Hot, concentrated nitric acid reacts with sulphur to form. Answer: Nitric oxide (NO). 2HNO3 (cone.) Write an equation for the following reaction: Copper and concentrated nitric acid. State what is observed when nitric acid is kept in a reagent bottle for a long time. Question 2. Copy and complete the corresponding inferences in. Nitric acid is a stronger oxidising agent in the cone, state of the acid than in the dilute state. Answer: Neutralization reaction. Reaction of manganese with cold very dil. 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 For refinning of noble metals like gold, platinum etc. This salt gives nitrogen dioxide on heating. Answer: The first step of Ostwald’s process involves catalytic oxidation of ammonia to nitric oxide and water (steam). (b) Most of the metals do not give hydrogen while reacting with nitric acid because HNO 3 is a strong oxidising agent. Ans. Answer: …. The NO2 so produced dissolves in cone. Select the letters A, B, C, D or E, which form the gaseous products of the reactions from 1 to 5. Solutions for Class 9 Chemistry Maharashtra, 10 Nitric Acid. 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. Hope given New Simplified Chemistry Class 10 ICSE Solutions Nitric Acids helpful to you. d) Reaction with Metals. Add – cone, sulphuric acid carefully from the sides of the test tube. dilute nitric acid is generally considered a typical acid but not so in its reaction with metals. Answer: Brown ring test: Procedure – Take a solution of – a nitrate or dilute nitric acid in a test tube. Five different products can be retrieved with the help of the device. The nitrogen dioxide dissolves in atmospheric moisture forming nitric acid. Answer: Hydrogen |H+| ions and Nitrate ions. When ammonium nitrate is heated the products formed are nitrous oxide and steam. Question 1. 1. 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. Silver reacts with nitric acid to give silver nitrate (AgNO 3), NO 2 and H 2 O. State the cone, acid which will oxidise sulphur directly to H2SO4. Nitric acid attacks proteins giving a yellow nitro compound known as xantho protein. Answer: Copper Nitrate. The pale yellow colour of nitric acid disappears and hence it becomes colourless. Answer: Brown vapours are seen in the reagent bottle and nitric acid turns yellowish in colour. Cu (s) + H 2 SO 4 (aq) ——> no reaction. Silver is oxidized to +1 oxidation state. More Resources for Selina Concise Class 10 ICSE Solutions (1) The reaction between a metal and an acid can be represented by the general word equation shown below: acid + metal → salt + hydrogen gas Answer: Question 2. State why nitric acid is a strong oxidising agent and yields varying products such as NO, NO2 on reaction with metals,non-metals etc. A reddish-brown gas is obtained when X, Y and Z are separately warmed with concentrated sulphuric acid and copper turnings added to the mixture. Nitric acid on exposure to sunlight, slowly decomposes to form nitrogen dioxide gas which is reddish brown in color/. Name the catalyst used. Output refers to the product of the process not the intermediate steps. Answer: Metals low in activity series can be obtained by reducing their sulphides or oxides by heating. Answer: Nitric acid is highly corrossive and a strong oxidising agent. Write a balanced equation for the reaction of cone. Nitric acid finds application in the purification of gold. H2SO4 4.Fe2(SO4)3 CO2. dilute nitric acid is generally considered a typical acid but not so in its reaction with metals. This is because at higher temperatures, HNO3 decomposes to give NO2. Select the correct word from the list in bracket to complete each statement. Question 2. Answer: Concentrated nitric acid (HNO3). Select the correct answer from A, B, C D and E (A) Nitroso Iron (II) sulphate (B) Iron (III) chloride (C) Chromium sulphate (D) Lead (II) chloride (E) Sodium chloride. Answer: At once reddish brown fumes of nitrogen dioxide gas are evolved. HNO3. Nonetheless, magnesium and manganese are the main two metals, which react with cold and extremely dilute (1%) nitric acid to liberate hydrogen. Observing Acid-Metal Reactions. In the laboratory preparation of nitric acid: Name the reactants A (a liquid) and B (a solid) used. 3. Question 4(3). 6FeSO4 +3H2SO4 + 2HNO3 (dil. ) Answer: Question 4. Rewrite the correct statement with the missing word/s: Magnesium reacts with nitric acid to liberate hydrogen gas. By the end of the lesson, students should be able readily to draw the conclusion: Metal + acid … → Cu (NO3)2 + 2H2O+ 2NO2, Question 4. NaHSO4 + HNO3, Question 3. Give balanced equations for the following conversions A to E. Answer: 1. The common anion is the ion. 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. Give reasons for the following: Iron is rendered passive with fuming nitric acid. Zn + 2HCl(dil.) Equation 3 2Fe 2 (SO 4 ) 3 + 2H 2 + 4NO → 4[Fe(H 2 O)5NO]SO 4 + 2H 2 SO 4 The [Fe(H 2 O) 5 NO]SO 4 forms a brown ring in the middle of the solution produced by the reaction, making it easy to identify the presence of nitrates in the water. Acid + Metal Word Equations Chemistry Tutorial Key Concepts. (2) Action of heat on a mixture of copper and concentrated nitric acid. In what way is dilute nitric acid different from other acids when it reacts with metals. State the concentration of nitric acid used in each case. Answer: Potassium nitrate and cone, sulphuric acid. Answer: CuCO3 + 2HNO3→ Cu (NO3)2 + H2O + CO2. State two relevant observations for : Lead nitrate crys­tals are heated in a hard glass test tube. Answer: Question 20. Answer: 3Cu + 8HNO3 → 3Cu(NO3)2 + 4H2O + 2NO. Question 5. Write the equation for the reaction in which copper is oxidized by concentrated nitric acid. Question 3. HNO, Three chemical products manufactured from nitric acid. Answer: The conditions which affect the decomposition of nitric acid are: Question 11. Reaction of zinc with dil. Answer: (A) Cone, sulphuric acid (B) Potassium nitrate (Nitre). From the list of the following salts — AgCl, MgCl2, NaHSO4, PbCO3, ZnCO3, KNO3, Ca(NO3)2 State the salt which on heating, evolves a brown coloured gas. The compound which is responsible for the brown ring in the brown ring test for identify the nitrate ion. State why a yellow colour that appears in concentrated  nitric acid when it is left standing in an ordinary glass bottle. State how you would obtain (1) Hydrogen (2) Nitric oxide (3) Nascent chlorine – from nitric acid. All the solutions of - Chemistry explained in detail by experts to help students prepare for their Maharashtra exams. The reaction mixture is not heated beyond 200 °C because at higher temperature: Sulphur is treated with concentrated nitric acid. From the substances – Ammonium sulphate, Lead carbonate, Chlorine, Copper nitrate, Ferrous sulphate — State: A compound which releases a reddish brown gas on reaction with concentrated sulphuric acid and copper turnings. Answer: Copper reacts with concentrated nitric acid to produce nitrogen dioxide. Answer: Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O, Question 3. Give balanced equations for: Oxidation of carbon with concentrated nitric acid. Experiment 2A – Reaction of Acid and Base. → Cu (NO3)2 + 2H2O + 2NO2. Question 1. Write the equations for the following reactions: Dilute nitric acid and copper. Choose from the list substances – Acetylence gas, aqua fortis, coke, brass, barium chloride, bronze, platinum. Reaction of carbon with cone, nitric acid. Solution 2 (2006). Fe (OH)3 + 3HNO3→ Fe (NO3)3 + 3H2O. If you have any doubts, please comment below. Nitric acid is a strong oxidising agent. Fill in the blank from the choices given in the bracket: Question 1. (c) Conc. study of compounds ammonia and nitric acid. (b) Nitric acid is kept in reagent bottle because nitric acid is a highly fuming liquid; it spreads in air and is highly corrosive. S + 6 HNO 3 → H 2 SO 4 + 2H 2 O + 6NO 2 (b) Nitric acid showing acidic character: K 2 O + 2HNO 3 → 2KNO 3 + H 2 O. ZnO + 2HNO 3 → Zn(NO 3) 2 + H 2 O (c) Nitric acid acting as oxidizing agent. Question 2. Acidified iron (II) sulphate (with dil. Use all glass apparatus with no wooden or rubber cork. Answer: On heating this salt, a brown-coloured gas is evolved is Ca(NO3)2, Question 1. During the process, nitric acid itself gets reduced to various products (NO, NO2, N2O, NH3, etc.) Answer: Nitric acid, Question 4. Write the equation for the same. Action of cold and dilute nitric acid on copper. That is why dilute nitric acid is considered a typical acid for its reaction with metals. Action of heat on a mixture of copper and concentrated nitric acid. 4. Cold, dil. Perform ring test in the laboratory in the presence of your teacher. Question 4. Potassium nitrate prepared from KOH and nitric acid. What do you see when concentrated nitric acid is added to copper. The precautions to be taken during the preparation. The reaction of zinc with dilute and concentrated nitric acid, respectively, produces: NO 2 and NO. Solution 6: (a) When carbon and conc. Answer: HNO3 (Nitric acid), Question 2. 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