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. Reaction of zinc with dilute nitric acid gives _____ gas. 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. For refinning of noble metals like gold, platinum etc. Convert nitric acid to sulphuric acid using a non-metal. State why a yellow colour that appears in concentrated  nitric acid when it is left standing in an ordinary glass bottle. Name a solution which gives nitrogen dioxide with copper. D : S + 6HNO3→ H2SO4 + 2H2O + 6NO2 E : 3SO2 + 2H2O + 2HNO3 → 3H2SO4 + 2NO, Question 4. Unlike other dilute acids only very dilute nitric acid (1%) reacts exclusively with Magnesium or … Question 2. Answer: Brown vapours are seen in the reagent bottle and nitric acid turns yellowish in colour. Answer the following questions pertaining to the brown ring test for nitric acid: Question 1. In what way is dilute nitric acid different from other acids when it reacts with metals. A mineral acid obtained from cone, nitric acid on reaction with a non-metal is……….. (hydrochloric acid / sulphuric acid / carbonic acid). Answer: Cold, dilute nitric acid reacts with copper to form nitric oxide. Thus, it cannot be concentrated by boiling. Question 3. nitric acid reacts with copper to form________(Hydrogen, nitrogen dioxide, nitric oxide). Nitric acid prepared in the laboratory is yellow in colour due to the dissolution of. Write equation for the same. dissolve in nitric acid. Answer: Nitrogen dioxide. Question 4. Give a reason why the brown ring does not settle down at the bottom of the test tube. The reaction mixture is not heated beyond 200 °C because at higher temperature: Sulphur is treated with concentrated nitric acid. 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-. 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). Question 1. ; Reactions between acids and the most reactive metals will result in vigorous fizzing as hydrogen gas is rapidly produced. Question 3. The precautions to be taken during the preparation. A non-metal which reacts with concentrated nitric acid to form its own acid as one of the product. preparation of H2NO3 from potassium nitrate and cone. It attacks rubber and wooden corks. Question 4. Answer: On heating this salt, a brown-coloured gas is evolved is Ca(NO3)2, Question 1. Answer: Nitric oxide (NO). Question 3. HNO3. Answer: Yellowish brown colour is changed to dark yellowish brown colour on prolonged decomposition. 2. Question 4. Cone. In the laboratory preparation of nitric acid from – KNO3 or NaNO3 State. Copper and Nitric Acid . Name the catalyst used. Answer: …. 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Select the letters A, B, C, D or E, which form the gaseous products of the reactions from 1 to 5. It is used to create an inert atmosphere for welding and for carrying certain chemical reactions. Dilute nitric acid is generally considered a typical acid except for its reaction with metals. Zn + 2HCl(dil.) Copper metal reacts with aqueous nitric acid to produce copper (II) nitrate, nitrogen dioxide and Reaction of sulphur with cone, nitric acid. Question 2. Nitric acid combines with protein of the skin forming a yellow compound Xanthoproteic acid, stains skin yellow. Perform ring test in the laboratory in the presence of your teacher. 3. Add to it – a freshly prepared saturated solution of iron [II] sulphate. 1. Question 10. Thus, if the temperature is allowed to go beyond 200°C, the product (HNO3) obtained is not pure (colourless). Related Questions to study. When nitric acid is prepared by the action of concentrated sulphuric acid on potassium nitrate, what is the special feature of the apparatus used. In general an acid reacts with a metal to produce a salt and hydrogen gas. That is why dilute nitric acid is considered a typical acid for its reaction with metals. Answer: Potassium nitrate and cone, sulphuric acid. A: Cu + 4HNO3→ Cu (NO3)2 + 2H2O + 2NO B: C : 2. 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. State why the unstable brown ring decomposes completely on disturbing. With cold, ... IIT Foundation & Olympiad Class 10 Chemistry Chapter 8 & 9. FeSO4 + NO → FeSO4.NO. The reaction of……….. (calcium carbonate / calcium oxide/ calcium sulphite) with dilute nitric acid is an example of a neutralization reaction. Name the gas evolved when acidified iron (II) sulphate reacts with dilute nitric acid in the brown ring test. (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. The reduction product depends on the dilution of the acid. (b) Most of the metals do not give hydrogen while reacting with nitric acid because HNO 3 is a strong oxidising agent. Nitric acid affects the skin if it accidently falls on it, staining the skin yellow. (b) When Cupric oxide reacts with dilute nitric acid, it forms Copper nitrate. Name the gas evolved (formula is not acceptable). Answer: Nitric acid, Question 4. 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. 2HNO3 (cone.) Explosives (T.N.T., picric acid, nitrocellulose etc. Question 13. Answer: (A) Cone, sulphuric acid (B) Potassium nitrate (Nitre). Name three chemical products manufactured from nitric acid. → Cu (NO3)2 + 2H2O+ 2NO2, Question 4. Write balanced chemical equation for: Action of hot and concentrated nitric acid on copper. Five different products can be retrieved with the help of the device. Question 16. Question 1. Action of cold and dilute nitric acid on copper. This salt gives nitrogen dioxide on heating. 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. It does, if the nitric acid is dilute. 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. Nitric acid is a powerful oxidising agent and hence corrodes rubber or any other stoppers to avoid corrosion, we use all glass apparatus. Acid + Metal Oxide ⇨ Salt + Water 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. State two relevant observations for : Lead nitrate crys­tals are heated in a hard glass test tube. It is due to the following reasons: Question 4(2). Answer: With very dilute nitric acid. Answer: Question 15. depending upon the concentration of the acid, reaction temperature and activity of the metal with which it is reacting. Answer: Hot and cone, nitric acid will oxidises sulphur directly to sulphuric acid. Nitric acid act as solvent for large number of metals. To help you to identify X, Y and Z, you are provided with the following experimental observations. Cu (s) + H 2 SO 4 (aq) ——> no reaction. Potassium nitrate prepared from KOH and nitric acid. More Resources for Selina Concise Class 10 ICSE Solutions Nitric acid does not liberate hydrogen. In what way is dilute nitric acid different from other acids when it reacts with metals. Cu + 4HNO3 (cone.) It is a powerful oxidizing agent and the nascent oxygen oxidises hydrogen in water. In the laboratory preparation of nitric acid, an all glass apparatus is used. Question 5. 202 Qs. Metal oxides are basic in nature. (c) Zinc reacts with nitric acid to form Zinc nitrate, nitric oxide and water. When ammonium nitrate is heated the products formed are nitrous oxide and steam. Answer. Extra Questions for Class 10 Science Chapter 3 Metals and Non-metals with Answers Solutions. Answer: At once reddish brown fumes of nitrogen dioxide gas are evolved. Question 5. Dilute nitric acid is generally considered a typical acid except for its reaction with metals. Table of Contents. (1) The reaction between a metal and an acid can be represented by the general word equation shown below: acid + metal → salt + hydrogen gas Pure cone, nitric acid or fuming nitric acid renders the metal…………. Add – cone, sulphuric acid carefully from the sides of the test tube. Answer: Question 1. State why nitric acid is a strong oxidising agent and yields varying products such as NO, NO2 on reaction with metals,non-metals etc. 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 Identify the gas evolved when: Question 2. Question 3. During lightning discharge, nitrogen in the atmosphere reacts with oxygen to form nitric oxide and further to nitrogen dioxide. Answer: Concentrated nitric acid (HNO3). It turns yellow because cone. It should A mnemonic device has been designed for writing reactions of metals with nitric acid. Question 1. Output refers to the product of the process not the intermediate steps. Write a balanced equation for – Ferric hydroxide reacts with nitric acid. The reaction of zinc with dilute and concentrated nitric acid, respectively, produces: NO 2 and NO. 10HNO 3 … Question 4. Acid Base Reaction with Metal - Experiment: Class 10 Science (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. Answer: Platinum. (2) Action of heat on a mixture of copper and concentrated nitric acid. Question 1. Impurities like Cu, Ag, Zn, etc. State two conditions which affect the decomposition of nitric acid. The exothermicity of catalytic reaction helps in stopping external heating, there by saving on energy. Nitric acid, (HNO 3), is a colourless, fuming, and highly corrosive acid … (b) Nitric acid undergoes decomposition as follows: ICSE Rankers is a free educational platform for icse k-12 students. Question 4. Answer: Reddish brown gas is liberated residue is yellow when hot and white when cold. Write the equation for the reaction in which copper is oxidized by concentrated nitric acid. e) Reaction with Metallic Sulphites. P 4 +20HNO 3 → 4H 3 PO 4 + 4H 2 O + 20NO 2. Write a balanced equation for the reaction of cone. During the process, nitric acid itself gets reduced to various products (NO, NO2, N2O, NH3, etc.) Question 6 … Action of heat on a mixture of copper and concentrated nitric acid. State a reason for the inactivity of iron and aluminium on reaction with fuming HNO3. This is due to the formation of a thin oxide coating on the surface of the metal which prevents further action. HCl is not used as a reactant in the laboratory preparation of nitric acid. Choose the correct word from the brackets to complete the sentence. Nitric acid is not manufactured from atmospheric nitrogen. 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. Answer: C + 4HNO3 → 2H2O + 4NO2 + CO2. Give balanced equations for the following conversions A to E. Answer: 1. In redox reactions of metals with acid, the acid concentration and temperature change. Name the chemical constituent of the brown ring ‘Y’. acid). Give equations for the action of heat on – (1) NH4Cl (2) NH4NO3. The yellow colour of nitric acid obtained in the laboratory is removed by babbling air through it. Answer: Cu + 4HNO3 → Cu(NO3)2 + 2NO2 + 2H2O. Answer: Copper Nitrate. Write the equation for the lab. Answer: Question 1. Nitric acid and silver metal reaction. HNO3. 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. Question 2. Nitric acid obtained in laboratory is pale yellow in colour. In redox reactions of metals with acid, the acid concentration and temperature change. }. 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. Cold, dilute, nitric acid reacts with copper to given, Hot, concentrated nitric acid reacts with sulphur to form. Answer: Metals, lying above hydrogen in the electro chemical series, give hydrogen from the acid. It should All the solutions of - Chemistry explained in detail by experts to help students prepare for their Maharashtra exams. Answer: Question 3. This is because nitric acid is a strong oxidising agent. Silver reacts with nitric acid to give silver nitrate (AgNO 3), NO 2 and H 2 O. It oxidises the hydrogen gas to form water. At high temperatures the sodium sulphate or phtassium sulphate formed, forms a crust and sticks to the glass apparatus. HNO3, to give it a yellow colour. If the conditions are right, just about any metal will burn. Answer: The first step of Ostwald’s process involves catalytic oxidation of ammonia to nitric oxide and water (steam). The characteristics of copper, and the reaction of the metal with nitric acid Stable metal Vs. Strong oxidizer. State what is observed when nitric acid is kept in a reagent bottle for a long time. Write a balanced equation for the reaction of – sulphur and hot concentrated nitric acid. Answer: Question 6. Nitric acid attacks proteins giving a yellow nitro compound known as xantho protein. In this reaction, salt and water are formed. 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. Ans. D. N 2 O and NO 2. X, Y and Z are three crystalline solids which are soluble in water and have a common anion. What is the property of nitric acid which allows it to react with copper ? Concentrated nitric acid vapours – condense and are collected in the water-cooled receiver. Ans. Answer: Neutralization reaction. 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. Residue of PbO is obtained temperature to give silver nitrate ( AgNO 3 ) nascent chlorine – from acid... ) NaNO3 is heated the products formed are Nitrous oxide and further reaction of metal with nitric acid class 10 nitrogen dioxide, nitrogen dioxide (.... 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