Name the catalyst used. Question 3. Metals and Non-metals Class 10 MCQs Questions with Answers. Silver reacts with nitric acid to give silver nitrate (AgNO 3), NO 2 and H 2 O. Reaction of sulphur with cone, nitric acid. Nitric acid obtained in laboratory is pale yellow in colour. Write the equations for the following reaction : Between copper and concentrated nitric acid. Saw dust is organic in nature. A catalyst used in the manufacture of nitric acid by Ostwald’s process. Nonetheless, magnesium and manganese are the main two metals, which react with cold and extremely dilute (1%) nitric acid to liberate hydrogen. The nitrogen dioxide dissolves in atmospheric moisture forming nitric acid. State why pure nitric acid takes on a yellowish brown colour when exposed to light. Answer: Copper Nitrate. Question 2. Give balanced equations for: Oxidation of carbon with concentrated nitric acid. The method of identification of the product i.e. The characteristics of copper, and the reaction of the metal with nitric acid Stable metal Vs. Strong oxidizer. The reaction of……….. (calcium carbonate / calcium oxide/ calcium sulphite) with dilute nitric acid is an example of a neutralization reaction. Answer: The greenish blue crystals of copper nitrate will change to black residue of copper oxide and give reddish brown gas i.e., nitrogen dioxide on heating. The non metal is Sulphur which reacts with concentrated nitric acid to form its own acid as one of the product. Get the detailed answer: Reactions of copper Experiment. In the laboratory preparation of nitric acid from – KNO3 or NaNO3 State. It is because at 68% concentration it forms a constant boiling mixture, i.e., if heated beyond this concentration then proportion of water vapour and nitric acid vapour, leaving the dilute acid does not change. In redox reactions of metals with acid, the acid concentration and temperature change. HCl is not used as a reactant in the laboratory preparation of nitric acid. 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. In case of nitric acid which is a strong oxidising agent, hydrogen produced in the nascent state reduces excess nitric acid and produces water and a reduction productof nitric acid. dilute nitric acid is generally considered a typical acid but not so in its reaction with metals. HNO3 with (1) carbon (2) copper. Answer: The complete apparatus is made of glass only – since the vapours of nitric acid being highly corrosive and attack rubber, cork, etc. Potassium nitrate prepared from KOH and nitric acid. Answer: (A) Cone, sulphuric acid (B) Potassium nitrate (Nitre). Nitric acid finds application in the purification of gold. Ans: Nitric acid is strong oxidizing agent thus it can oxidize the hydrogen gas liberated in the reaction into water. Question 2. Copper and Nitric Acid . What is the property of nitric acid which allows it to react with copper ? Answer: 3Cu + 8HNO3 → 3Cu(NO3)2 + 4H2O + 2NO. Answer: Question 5. Nitric acid and silver metal reaction. Question 2. Question 17. 2. (d) The temperature of the mixture of concentrated sulphuric acid and sodium nitrate should not exceed 200°C because sodium sulphate formed at higher temperature forms a hard crust which sticks to the walls of the retort and is difficult to remove. Question 1. Solution 6: (a) When carbon and conc. 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. Add to it – a freshly prepared saturated solution of iron [II] sulphate. State why the unstable brown ring decomposes completely on disturbing. Passivity can be removed by rubbing the surface layer with the sand paper or by treating with strong reducing agent. The exothermicity of catalytic reaction helps in stopping external heating, there by saving on energy. Question 4(3). Question 1. depending upon the concentration of the acid, reaction temperature and activity of the metal with which it is reacting. Question 2. Answer: Question 6. State a reason for the inactivity of iron and aluminium on reaction with fuming HNO3. Nitric acid reacts with most metals, but the details depend on the concentration of the acid and the nature of the metal. Answer: …. It should Focus on Nitric Acid is the Most important Chapter in ICSE Class 10 Chemistry. Answer: Cu + 4HNO3 (cone.) nitric acid. NO and N 2 O. (c) Zinc reacts with nitric acid to form Zinc nitrate, nitric oxide and water. Answer: Cu + 4HNO3 → Cu(NO3)2 + 2H2O + 2NO2  ↑, Question 2. Question 1. Question 10. → Cu (NO3)2 + 2H2O+ 2NO2, Question 4. Which of the two solutions – iron (II) sulphate or cone, sulphuric acid, do ‘X’ and ‘Z’ represent. 5. ), Fertilizers (Ammonium nitrate, calcium ammonium nitrate or C.A.N.). Question 2. Perform ring test in the laboratory in the presence of your teacher. It is used to create an inert atmosphere for welding and for carrying certain chemical reactions. Answer: In the presence of sunlight nitric acid decomposes even at room temperature to give nitrogen dioxide, water and oxygen. Zn(NO3)2 3. Silver reacts with nitric acid to give silver nitrate (AgNO 3), NO 2 and H 2 O. Question 1. 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. Answer: S + 6HNO3 → H2SO4 + 2H2O + 6NO2. The complete apparatus in the laboratory preparation does not contain parts made of rubber or cork. Add – cone, sulphuric acid carefully from the sides of the test tube. Correct the following statements.Copper reacts with nitric acid to produce nitrogen dioxide. Select the correct word from the list in bracket to complete each statement. It does, if the nitric acid is dilute. Answer: Nitric acid works as an oxidising agent. 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. HNO3. Answer: (1) (2) Sodium Nitrate + Sulphuric acid (conc.) Write the equation for the reaction in which copper is oxidized by concentrated nitric acid. All the solutions of - Chemistry explained in detail by experts to help students prepare for their Maharashtra exams. The first step in the manufacture of HNO3 is the catalytic oxidation of NH3. Metal oxides are basic in nature. Give two general uses of HNO3. Dilute nitric acid behaves as a typical acid in its reaction with most metals. Name the oxidised product when the following 1 to 5 react with nitric acid, Answer: 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: Question 3. Convert ammonia to nitric acid by the above process giving all conditions. It is due to the following reasons: Question 4(2). Identify the acid — The acid which is prepared by cata­lytic oxidation of ammonia. Answer: HNO3 (Nitric acid), Question 2. This is because at higher temperatures, HNO3 decomposes to give NO2. Question 5. Write the equation for the same. HNO3. The reaction temperature is maintained below 200°C Answer: The reaction temperature is maintained below 200°C. With cold, ... IIT Foundation & Olympiad Class 10 Chemistry Chapter 8 & 9. → 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. → ZnCl2 + H2 However, when zinc reacts with dil HNO3, no hydrogen is obtained. It turns yellow because cone. 288 Views. Instead it liberates oxides of nitrogen, such as nitric oxide, nitrogen dioxide, etc., as it is very powerful oxidising agent. Match each substance A to E listed below with the appropriate description given below.| (A) Sulphur (B) Silver chloride (C) Hydrogen chloride (D) Copper (II) sulphate (E) Graphite. Highly corrossive and a strong oxidising agent appropriate observation for the reaction temperature is maintained below 200°C answer (... Nitrate, nitric acid combines with protein of the device, Y and Z, you are provided the. 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