Metal oxides are basic in nature. Answer: Metals, lying above hydrogen in the electro chemical series, give hydrogen from the acid. 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. Answer. Name the gas produced when copper reacts with concentrated nitric acid. (b) Nitric acid showing acidic character: (c) Nitric acid acting as oxidizing agent. 2HNO3 (cone.) Answer: C + 4HNO3 → 2H2O + 4NO2 + CO2. Nitric acid combines with protein of the skin forming a yellow compound Xanthoproteic acid, stains skin yellow. Fe (OH)3 + 3HNO3→ Fe (NO3)3 + 3H2O. Question 1. (1) State the special feature of the apparatus used in the laboratory preparation of nitric acid? Question 1. Answer: Nitric acid, Question 4. Answer: Question 3. Answer: 3Cu + 8HNO3 → 3Cu(NO3)2 + 4H2O + 2NO. Nitric acid and silver metal reaction. Dilute nitric acid is generally considered a typical acid except for its reaction with metals. (1) Dissociation (2) decomposition Answer: Question 2. Write a balanced equation for the reaction of – sulphur and hot concentrated nitric acid. Question 4. 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. 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. Question 10. Nitric acid finds application in the purification of gold. State how addition of nitric acid to acidified FeSO, serves as a test for the former. Solution 1 (2008). d) Reaction with Metals. 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. Give balanced equations for the following conversions A to E. Answer: 1. Answer: Brown ring test: Procedure – Take a solution of – a nitrate or dilute nitric acid in a test tube. Sodium nitrate reacts with — (concentrated / dilute) sulphuric acid to produce nitric acid. State the concentration of nitric acid used in each case. (2) State why the temperature of the reaction mixture of HNO3 is not allowed to rise above 200°C. Question 4. Answer: Question 1. Answer: Question 1. Question 3. Answer: Cone. Reaction of Acid and Base Reaction of Base with a Metal. 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. The method of identification of the product i.e. Answer: Nitrogen dioxide. (c) Conc. State why pure nitric acid takes on a yellowish brown colour when exposed to light. It turns yellow because cone. Question 5. Cold, dil. Choose from the list substances – Acetylence gas, aqua fortis, coke, brass, barium chloride, bronze, platinum. Write the balanced chemical equation for –. 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. A non-metal which reacts with concentrated nitric acid to form its own acid as one of the product. A catalyst used in the manufacture of nitric acid by Ostwald’s process. Passivity can be removed by rubbing the surface layer with the sand paper or by treating with strong reducing agent. HNO3. Question 3. Question 2. Dilute nitric acid is generally considered a typical acid except for its reaction with metals. Answer: [NO–] Nitrate, Question 2. Question 4. Nitric acid is heated the products formed are Carbon dioxide, Nitrogen dioxide and water. Table of Contents. You can refer to NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-metals to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. The yellow colour of nitric acid obtained in the laboratory is removed by babbling air through it. Answer: All glass apparatus is used in the laboratory preparation of nitric acid. The ability of metals to be drawn into thin wires is known as Uses of Nitric Acid Answer: Question 5. State the type of reaction involved. Nitric acid affects the skin if it accidently falls on it, staining the skin yellow. This is because nitric acid is a strong oxidising agent. Buff coloured residue of PbO is obtained in the test tube. Calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of the metal. Answer: Nitrogen dioxide. State why hydrogen is liberated when zinc reacts with dil.HCl but not with dil. Select the letters A, B, C, D or E, which form the gaseous products of the reactions from 1 to 5. Gradually the copper dissolves in dilute nitric acid to form greenish blue solution of copper (II) oxide. Focus on Nitric Acid is the Most important Chapter in ICSE Class 10 Chemistry. → ZnCl2 + H2 However, when zinc reacts with dil HNO3, no hydrogen is obtained. The precautions to be taken during the preparation. It does, if the nitric acid is dilute. Fill in the blank from the choices given in the bracket: Question 1. In the laboratory preparation of nitric acid from – KNO3 or NaNO3 State. Write the equations for the following reaction : Between copper and concentrated nitric acid. Give examples, alongwith equations to illustrate the reaction of the add. → Cu (NO3)2 + 2H2O+ 2NO2, Question 4. 10HNO 3 … HNO 3 acid dissociate completely in the water and release hydronium ion (H 3 O +) in the water to form strong acid … Potassium nitrate prepared from KOH and nitric acid. Give reasons for the following: Iron is rendered passive with fuming nitric acid. Convert ammonia to nitric acid by the above process giving all conditions. Output refers to the product of the process not the intermediate steps. Copy and complete the following table relating to an important industrial process. Nitric acid on exposure to sunlight, slowly decomposes to form nitrogen dioxide gas which is reddish brown in color/. Answer: The complete apparatus is made of glass only – since the vapours of nitric acid being highly corrosive and attack rubber, cork, etc. Question 3. A: Nitrogen dioxide only B: Nitric oxide only C: Hydrogen D: Nitrogen dioxide and oxygen E: Nitrogen dioxide and carbon dioxide. Answer: At once reddish brown fumes of nitrogen dioxide gas are evolved. Acid Base Reaction with Metal - Experiment: Class 10 Science Question 5. Question 2. Reaction of zinc with dilute nitric acid gives _____ gas. Question 3. Identify the acid — The acid which is prepared by cata­lytic oxidation of ammonia. According to Divers, nitrous acid is not produced in appreciable amounts, because further reduction occurs which is due to the action of nascent hydrogen: S + 6HNO3 → H2SO4 + 2H2O + 6NO2, Question 1. Question 4(3). The p-Block Elements. State two conditions which affect the decomposition of nitric acid. From the formulae listed below, choose, one, corresponding to the salt having the given description: AgCl, CuCO3, CuSO4. HNO3 when added to copper turnings kept in a beaker. → 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. Cannot be concentrated beyond 68% by boiling. It does, if the nitric acid is dilute. That is why dilute nitric acid is considered a typical acid for its reaction with metals. Question 5. Thus, if the temperature is allowed to go beyond 200°C, the product (HNO3) obtained is not pure (colourless). nitric acid. 288 Views. Silver reacts with nitric acid to give silver nitrate (AgNO 3), NO 2 and H 2 O. During the reaction it produces Nitrous acid and Zinc nitrate. Answer: Metals low in activity series can be obtained by reducing their sulphides or oxides by heating. 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 exothermicity of catalytic reaction helps in stopping external heating, there by saving on energy. Kinetics of metal reaction in nitric acid, and maybe the possibility of formation of different reaction gaseous products (N 2 O, N 2, NO, NO 2,NH 3, 2 and H 2, 3) are also influenced by the shape of metal; for example, a piece of thin wire or powder. dilute nitric acid is generally considered a typical acid but not so in its reaction with metals. Question 19. NaHSO4 + HNO3, Question 3. The first step in the manufacture of HNO3 is the catalytic oxidation of NH3. 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. Nitric acid is not manufactured from atmospheric nitrogen. dissolve in nitric acid. Answer: Hot and cone, nitric acid will oxidises sulphur directly to sulphuric acid. Question 3. 05. Unlike other dilute acids only very dilute nitric acid (1%) reacts exclusively with Magnesium or … If the conditions are right, just about any metal will burn. Question 16. Question 3. 5H2O, KNO3, NaCl, NaHSO,, Pb(NO3)2, ZnCO3, ZnSO4.7H2O. Name a solution which gives nitrogen dioxide with copper. Ans. By the end of the lesson, students should be able readily to draw the conclusion: Metal + acid … Nitric acid oxidises the hydrogen produced to water and hence no hydrogen is liberated. When nitric acid is prepared by the action of concentrated sulphuric acid on potassium nitrate, what is the special feature of the apparatus used. Answer: Question 2. State one observation for the following: Zinc nitrate crystals are strongly heated. Convert nitric acid to sulphuric acid using a non-metal. Name three chemical products manufactured from nitric acid. 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. (b) Copper when reacts with dilute HNO3 forms Copper nitrate, Nitric oxide and water. Reaction of sulphur with cone, nitric acid. State a reason for the inactivity of iron and aluminium on reaction with fuming HNO3. In the laboratory preparation of nitric acid: Name the reactants A (a liquid) and B (a solid) used. Answer: (1) (2) Sodium Nitrate + Sulphuric acid (conc.) HNO 3 acid dissociate completely in the water and release hydronium ion (H 3 O +) in the water to form strong acid … Solutions for Class 9 Chemistry Maharashtra, 10 Nitric Acid. A blue crystalline solid X on heating gave a reddish brown gas Y, a gas which re-lights a glowing splint and a residue is black Identify X, Y and write the equation for the action of heat on X. Write a balanced equation for the reaction of cone. Instead it liberates oxides of nitrogen, such as nitric oxide, nitrogen dioxide, etc., as it is very powerful oxidising agent. D. N 2 O and NO 2. Answer: Question 6. Question 14. Therefore, nitric acid stains skin and renders wool yellow. Select the correct word from the list in bracket to complete each statement. Nitric acid, (HNO 3), is a colourless, fuming, and highly corrosive acid … Answer: Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O. What is the property of nitric acid which allows it to react with copper ? Question 2. X, Y and Z are three crystalline solids which are soluble in water and have a common anion. Nitric acid reacts with most metals, but the details depend on the concentration of the acid and the nature of the metal. It should Nitric acid is a strong oxidising agent. State the change in colour of pure concentrated nitric acid on initial and prolonged decomposition. Question 6 … 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. Answer: Question 1. It attacks rubber and wooden corks. State how you would obtain (1) Hydrogen (2) Nitric oxide (3) Nascent chlorine – from nitric acid. Write a balanced equation for – Ferric hydroxide reacts with nitric acid. nitric acid. It oxidises the H 2 produced to water and itself gets reduced to any of the nitrogen oxides (N 2 O, NO, NO 2). If you have any doubts, please comment below. During the process, nitric acid itself gets reduced to various products (NO, NO2, N2O, NH3, etc.) Add to it – a freshly prepared saturated solution of iron [II] sulphate. Five different products can be retrieved with the help of the device. At high temperatures the sodium sulphate or phtassium sulphate formed, forms a crust and sticks to the glass apparatus. It is because it does not liberate hydrogen gas when treated with metals. It oxidises the hydrogen gas to form water. Use all glass apparatus with no wooden or rubber cork. Silver reacts with nitric acid to give silver nitrate (AgNO 3), NO 2 and H 2 O. Silver is oxidized to +1 oxidation state. Question 4. Choose the correct word from the brackets to complete the sentence. Explosives (T.N.T., picric acid, nitrocellulose etc. In the laboratory preparation of nitric acid, an all glass apparatus is used. Cone. preparation of H2NO3 from potassium nitrate and cone. depending upon the concentration of the acid, reaction temperature and activity of the metal with which it is reacting. study of compounds ammonia and nitric acid. Zn(NO3)2 3. (b) When Cupric oxide reacts with dilute nitric acid, it forms Copper nitrate. The gas produced by the action of dilute nitric acid on copper. nitric acid reacts with copper to form________(Hydrogen, nitrogen dioxide, nitric oxide). The reaction of……….. (calcium carbonate / calcium oxide/ calcium sulphite) with dilute nitric acid is an example of a neutralization reaction. (1) The reaction between a metal and an acid can be represented by the general word equation shown below: acid + metal → salt + hydrogen gas HNO3 decomposes by the action of sunlight to give brown coloured NO2 The brown coloured NO2 dissolves in cone. Unlike other dilute acids only very dilute nitric acid (1%) reacts exclusively with Magnesium or … Share Tweet Send [Deposit Photos] Cop­per is one of the old­est known met­als, which has been used by peo­ple from an­cient times. Answer: A pungent smelling reddish brown coloured gas (NO2) is produced and the solution turns greenish blue. The yellow colour of cone, nitric acid is due to NO2 dissolved in it. With cold, ... IIT Foundation & Olympiad Class 10 Chemistry Chapter 8 & 9. Answer: Step I Step II Step III  4NO2 + 2H2O → 4HNO3. Understand concepts from this chapter such as aqua regia, passive iron, aqua fortis, nitrogen fixation etc. Access the complete Selina Solutions for ICSE Class 10 Chemistry Chapter 10 Study of Compounds C. Nitric Acid at TopperLearning. Solution 1 (2007). acid formed. Magnesium, manganese, and zinc liberate H 2 : Mg + 2 HNO 3 → Mg (NO 3) 2 + H 2 (Magnesium nitrate) The reaction mixture is not heated beyond 200 °C because at higher temperature: Sulphur is treated with concentrated nitric acid. Silver is oxidized to +1 oxidation state. Similarly, phenol reacts with nitric acid in the presence of H2SO4 to give trinitrophenol (known as picric acid). Write an equation to show how nitric acid undergoes decomposition. HNO 3 reaction with water. Nitric acid, as a rule, does not carry on as an acid with metals to shape the comparing salt and free hydrogen. use of low temp, in the conversion of NO to NO. Question 5. H2SO4. It is a powerful oxidizing agent and the nascent oxygen oxidises hydrogen in water. Question 12. Answer: Zinc displace hydrogen from dil. Answer: …. The characteristics of copper, and the reaction of the metal with nitric acid Stable metal Vs. Strong oxidizer. Answer: Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O, Question 3. Explain why only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate. Answer: Question 2. In what way is dilute nitric acid different from other acids when it reacts with metals. Name the gas evolved when acidified iron (II) sulphate reacts with dilute nitric acid in the brown ring test. In redox reactions of metals with acid, the acid concentration and temperature change. Write a balanced equation for the reaction of cone. At higher temperature, nitric acid may also decompose. Reaction of zinc with dil. Observing Acid-Metal Reactions. Question 1. Question 2. Name the gas evolved (formula is not acceptable). The complete apparatus in the laboratory preparation does not contain parts made of rubber or cork. Answer: Platinum. State the colour of (1) pure nitric acid (2) nitric acid obtained in the laboratory (3) nitric acid obtained in the laboratory after passage of air or addition of water to it. (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. Reaction of manganese with cold very dil. State why the unstable brown ring decomposes completely on disturbing. Brown coloured pungent smelling gas – nitrogen dioxide (NO. Answer: Cu + 4HNO3 (cone.) Solution 3 (2006). HNO 3 reaction with water. Thus, it cannot be concentrated by boiling. 6FeSO4 +3H2SO4 + 2HNO3 (dil. ) Kinetics of metal reaction in nitric acid, and maybe the possibility of formation of different reaction gaseous products (N 2 O, N 2, NO, NO 2,NH 3, 2 and H 2, 3) are also influenced by the shape of metal; for example, a piece of thin wire or powder. (b) Nitric acid undergoes decomposition as follows: ICSE Rankers is a free educational platform for icse k-12 students. State the cone, acid which will oxidise sulphur directly to H2SO4. The compound which is responsible for the brown ring in the brown ring test for identify the nitrate ion. P 4 +20HNO 3 → 4H 3 PO 4 + 4H 2 O + 20NO 2. (2) Action of heat on a mixture of copper and concentrated nitric acid. 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. State what is observed when nitric acid is kept in a reagent bottle for a long time. Extra Questions for Class 10 Science Chapter 3 Metals and Non-metals with Answers Solutions. Fill in the blanks using the appropriate words given in the bracket below: (sulphur dioxide, nitrogen dioxide, nitric oxide, sulphuric acid), Question 1. : a pungent smelling reddish brown coloured NO2 dissolves in dilute nitric acid to produce nitrogen dioxide etc.... Give balanced equations for the following: ( 1 ) NH4Cl ( 2 nitric! Condense and are collected in the manufacture of nitric acid on exposure to,! Solutionsselina ICSE SolutionsML Aggarwal Solutions, Viraf J Dalal Chemistry Class 10 Science Chapter 3 metals and with... Foundation & Olympiad Class 10 MCQs Questions with Answers Solutions which it is because at temperature. – Ferric hydroxide reacts with a metal oxide both neutralize each other each case a )... And oxygen apparatus is used to create an inert atmosphere for welding for. 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