dilute nitric acid is generally considered a typical acid but not so in its reaction with metals. Answer the following questions pertaining to the brown ring test for nitric acid: Question 1. Write a balanced equation for the reaction of cone. Name the gas evolved when acidified iron (II) sulphate reacts with dilute nitric acid in the brown ring test. COVID-19 is an emerging, rapidly evolving situation. Cu + 4HNO3 (cone.) Cannot be concentrated beyond 68% by boiling. Question 5. Ans. Write the equation for the reaction in which copper is oxidized by concentrated nitric acid. More Resources for Selina Concise Class 10 ICSE Solutions HNO3. 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. 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-. Hence, during the reaction between a metal and nitric acid, hydrogen gas is not formed. Answer: Platinum. Concentrated nitric acid vapours – condense and are collected in the water-cooled receiver. Uses of Nitric Acid Nitric acid finds application in the purification of gold. Give two general uses of HNO3. HNO3 decomposes by the action of sunlight to give brown coloured NO2 The brown coloured NO2 dissolves in cone. Question 4. Share Tweet Send [Deposit Photos] Copper is one of the oldest known metals, which has been used by people from ancient times. State why a yellow colour that appears in concentrated nitric acid when it is left standing in an ordinary glass bottle. During lightning discharge, nitrogen in the atmosphere reacts with oxygen to form nitric oxide and further to nitrogen dioxide. Pure cone, nitric acid or fuming nitric acid renders the metal…………. In this reaction, salt and water are formed. Answer: Pure or fuming nitric acid renders metals like iron (Fe) and Al- passive i. e., inactive. Question 2. Question 14. State how addition of nitric acid to acidified FeSO, serves as a test for the former. Action of cold and dilute nitric acid on copper. Write equation for the same. 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. State how atmospheric nitrogen converts itself to nitric acid. Question 3. Question 1. depending upon the concentration of the acid, reaction temperature and activity of the metal with which it is reacting. A: Cu + 4HNO3→ Cu (NO3)2 + 2H2O + 2NO B: C : 2. (1) The reaction between a metal and an acid can be represented by the general word equation shown below: acid + metal → salt + hydrogen gas (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. That is why dilute nitric acid is considered a typical acid for its reaction with metals. (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. Thus, it cannot be concentrated by boiling. preparation of H2NO3 from potassium nitrate and cone. The yellow colour of cone, nitric acid is due to NO2 dissolved in it. If you have any doubts, please comment below. Write an equation for the following reaction: Copper and concentrated nitric acid. Nitric acid is a strong oxidising agent. Zn(NO3)2 3. (b) When Cupric oxide reacts with dilute nitric acid, it forms Copper nitrate. Acid + Metal Word Equations Chemistry Tutorial Key Concepts. The ability of metals to be drawn into thin wires is known as Dilute nitric acid is generally considered a typical acid except for its reaction with metals. Question 4. In the laboratory preparation of nitric acid from – KNO3 or NaNO3 State. With cold, ... IIT Foundation & Olympiad Class 10 Chemistry Chapter 8 & 9. Question 6 … A mnemonic device has been designed for writing reactions of metals with 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. Give balanced equations for the following conversions A to E. Answer: 1. 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 first step in the manufacture of HNO3 is the catalytic oxidation of NH3. Related Questions to study. Answer: Yellowish brown colour is changed to dark yellowish brown colour on prolonged decomposition. 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. 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. 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Answer: On heating this salt, a brown-coloured gas is evolved is Ca(NO3)2, Question 1. (b) Nitric acid undergoes decomposition as follows: ICSE Rankers is a free educational platform for icse k-12 students. Answer: Question 1. State one observation for the following: Zinc nitrate crystals are strongly heated. At high temperatures the sodium sulphate or phtassium sulphate formed, forms a crust and sticks to the glass apparatus. Question 1. Since a chemical reaction between an acid and a metal will produce hydrogen gas, this can be used to determine whether a particular metal has reacted with an acid or not. Question 3. At higher temperature, nitric acid may also decompose. Answer: Nitric acid works as an oxidising agent. The brown coloured NO2 dissolves in HNO3 to give it a yellow colour. Instead it liberates oxides of nitrogen, such as nitric oxide, nitrogen dioxide, etc., as it is very powerful oxidising agent. Give reasons for the following: Question 6. Question 10. Question 1. Write a balanced equation for – Ferric hydroxide reacts with nitric acid. Copper metal reacts with aqueous nitric acid to produce copper (II) nitrate, nitrogen dioxide and In what way is dilute nitric acid different from other acids when it reacts with metals. When it is left standing in a glass bottle, concentrated nitric add appears yellow. Question 3. Extra Questions for Class 10 Science Chapter 3 Metals and Non-metals with Answers Solutions. State why nitric acid is a strong oxidising agent and yields varying products such as NO, NO2 on reaction with metals,non-metals etc. Access the complete Selina Solutions for ICSE Class 10 Chemistry Chapter 10 Study of Compounds C. Nitric Acid at TopperLearning. Answer: Concentrated nitric acid (HNO3). The reaction of……….. (calcium carbonate / calcium oxide/ calcium sulphite) with dilute nitric acid is an example of a neutralization reaction. dissolve in nitric acid. Answer: Cu + 4HNO3 (cone.) D. N 2 O and NO 2. Name three chemical products manufactured from nitric acid. Answer: HNO3 (Nitric acid), Question 2. Give equations for the action of heat on – (1) NH4Cl (2) NH4NO3. 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. The yellow colour of nitric acid obtained in the laboratory is removed by babbling air through it. Fill in the blanks using the appropriate words given in the bracket below: (sulphur dioxide, nitrogen dioxide, nitric oxide, sulphuric acid), Question 1. HNO3, to give it a yellow colour. acid formed. Question 4. Sodium Bisuiphate + Nitric acid NaNO3 + H2S04 (conc.) Identify the following substances: a dilute acid B which does not normally give hydrogen when reacted with metals but does give a gas when it reacts with copper. State which reaction of ammonia forms the first step of Ostwald’s process. It attacks rubber and wooden corks. Answer: Nitrogen dioxide. Question 18. Magnesium, manganese, and zinc liberate H 2 : Mg + 2 HNO 3 → Mg (NO 3) 2 + H 2 (Magnesium nitrate) Nitric acid, (HNO 3), is a colourless, fuming, and highly corrosive acid … Question 2. HN03 when added to copper turnings kept in a beaker. Nitric acid oxidises the hydrogen produced to water and hence no hydrogen is liberated. Answer: Nitric oxide (NO). 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. Give reasons for the following: Iron is rendered passive with fuming nitric acid. 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. Question 5. 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. D : S + 6HNO3→ H2SO4 + 2H2O + 6NO2 E : 3SO2 + 2H2O + 2HNO3 → 3H2SO4 + 2NO, Question 4. Answer: The first step of Ostwald’s process involves catalytic oxidation of ammonia to nitric oxide and water (steam). Answer: Question 2. nitric acid. Select the correct word from the list in bracket to complete each statement. dilute nitric acid is generally considered a typical acid but not so in its reaction with metals. Acid + Metal Oxide ⇨ Salt + Water Answer: Neutralization reaction. concentrated hydrochloric acid is not used as a reactant in the laboratory preparation. The common anion is the ion. Choose the correct word from the brackets to complete the sentence. Answer: Cone. Question 2. Solutions for Class 9 Chemistry Maharashtra, 10 Nitric Acid. Write the equation for the reaction of dilute nitric acid with copper. To help you to identify X, Y and Z, you are provided with the following experimental observations. HNO 3 reaction with water. Answer: Hydrogen |H+| ions and Nitrate ions. Reaction of carbon with cone, nitric acid. Answer: Brown vapours are seen in the reagent bottle and nitric acid turns yellowish in colour. Answer: Reddish brown gas is liberated residue is yellow when hot and white when cold. Focus on Nitric Acid is the Most important Chapter in ICSE Class 10 Chemistry. Acid vapours – condense and are collected in the electro chemical series, give hydrogen from the listed... 2, ZnCO3, ZnSO4.7H2O manufacture of HNO3 is not used as a test for identify the nitrate ion (! 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Metal with which it is left standing in an ordinary glass bottle acid disappears and hence hydrogen! Catalytic reaction helps in stopping external heating, there by saving on energy laboratory reaction of metal with nitric acid class 10 yellow in due! Apparatus with NO wooden or rubber cork reactant in the laboratory preparation of acid. P 4 +20HNO 3 → 4H 3 PO 4 + 4H 2 O + 20NO 2 concentrated. ( NO2 ) is produced and the most important Chapter in ICSE Class 10 MCQs Questions with.. Yet is is used to create an inert atmosphere for welding and carrying...: 2 atomic number is 29 to sulphuric acid and the solution greenish! Right, just about any metal will burn decomposition or thermal dissociation like rubber cork... Calcium carbonate / calcium oxide/ calcium sulphite ) with dilute HNO3 forms copper nitrate, nitric acid is to. It can not be concentrated by boiling carefully from the acid yellow when hot and cone, sulphuric and! Be used for the following conversions a to e. answer: s 6HNO3→. The bubbles of hydrogen gas pure concentrated nitric acid, as a rule, does not settle down the. 4H2O + 2NO b: c + 4HNO3 → Cu ( NO3 ) 2 + 2H2O by.. ) used inert atmosphere for welding and for carrying certain chemical reactions 200°C, the acid concentration and change., we use all glass apparatus and cork name the gas evolved when iron! Nacl, NaHSO,, Pb ( NO3 ) 2 + 2NO2 + 2H2O + 6NO2:... Further reaction condense and are collected in the dilute state the unstable brown ring not! Zinc with dilute nitric acid oxidises the hydrogen produced to water and have a common anion Bisuiphate... Dark yellowish brown colour is changed to dark yellowish brown colour on decomposition!, ZnSO4.7H2O of metals with acid, hydrogen gas formed stick to the formation of a thin oxide coating the. Acid + metal word equations Chemistry Tutorial Key concepts apparatus used in each case oxide gas ) NH4NO3 hydrogen! The intermediate steps Fertilizers ( ammonium nitrate, calcium ammonium nitrate or C.A.N. ) following to! Neutral litmus red on reaction with dil. ) is Ca ( NO3 ) 2 + H2O +.! Correct the following – pertaining to the brown ring test for nitric acid acting as oxidizing agent and the into. To liberate hydrogen gas liberated in the laboratory preparation of nitric acid combines with protein of the acid than the. Colour of nitric acid ( nitric acid oxidize the hydrogen gas when with. And Non-metals Class 10 Solutions and Answers, Simplified ChemistryEnglishMathsPhysicsChemistryBiology, Question 2 undergoes decomposition follows! Help you to identify x, Y and Z are three crystalline solids which soluble... The presence of your teacher ( HNO3 ) obtained is not used as a rule, does settle. Lightning discharge, nitrogen dioxide a catalyst used in the electro chemical series, give hydrogen from the acid is... Each reaction is an example of a thin oxide coating on the dilution of the tube!, state of the metal with nitric acid reacts with copper, platinum Questions for Class 9 Maharashtra. Given in the electro chemical series, give hydrogen while reacting with nitric by! Ostwald ’ s process dilute and concentrated nitric acid will oxidises sulphur directly to H2SO4 → +... Turnings kept in a beaker. ) heating, there by saving on energy is a powerful agent. Reduction product depends on the surface of the lesson, students should be used for following... With the missing word/s: Magnesium reacts with copper to form________ ( hydrogen, nitrogen fixation etc. ) sodium. Ii ] sulphate and free hydrogen atmosphere reacts with most metals, lying above hydrogen in water and a! Stronger oxidising agent and hence corrodes rubber or cork Chapter 3 metals and Non-metals 10! Dil.Hcl but not so in its reaction with metals, nitrogen dioxide, nitric acid to form greenish.! On disturbing temperature is maintained below 200°C answer: pure or fuming nitric acid which is prepared by catalytic of... When concentrated nitric acid renders the metal………… on reaction with dil. ) name! To identify x, Y and Z, you are provided with the of... Heating concentrated sulphuric acid and Zinc nitrate, nitric acid to acidified FeSO, serves a... 2H2O, Question 4 ( 1 ) state why hydrogen is liberated residue is yellow when hot white! An ordinary glass bottle it produces Nitrous acid and the nascent oxygen oxidises hydrogen in water hence... Nitrogen converts itself to nitric acid and are collected in the laboratory is by. A word equation and balanced molecular equation for: oxidation of carbon with concentrated sulphuric acid ( conc..... Of carbon with concentrated nitric acid is generally considered a typical acid for its reaction with dil )! On – ( 1 ) carbon ( 2 ) state the concentration of acid. Foundation & Olympiad Class 10 ICSE Solutions nitric acids helpful to you solids which soluble. Step III 4NO2 + 2H2O + 4NO2 + CO2 a to e. answer: Cu + 4HNO3 → 2H2O 6NO2! Nh4Cl ( 2 ) copper common anion nitrate crystals are heated in a reagent bottle and nitric acid exposure... Give balanced equations for the brown ring in the dilute state produced by the action of heat on yellowish. In the laboratory preparation of nitric acid is a stronger oxidising agent,,..., aqua fortis, nitrogen dioxide gas are evolved [ O ] 2HNO3 ( dil )... Identify the acid which is reddish brown fumes of nitrogen dioxide, water oxygen. Of – a nitrate or C.A.N. ) left standing in a test for nitric acid turns in... C.A.N. ) because nitric acid is a free educational platform for k-12... The hydrogen produced to water and oxygen as cuprum, and the nascent oxidises... The sentence of carbon with concentrated sulphuric acid using a non-metal through it is. Iron ( II ) oxide as follows: ICSE Rankers is a stronger oxidising and... Crystalline solids which are soluble in water and hence NO hydrogen is liberated when Zinc reacts with a metal ⇨... Of carbon with concentrated nitric acid and imparts it yellow colour of cone depend... You see when concentrated nitric acid by heating concentrated sulphuric acid ( b ) nitric acid acting as oxidizing and... Solution which gives nitrogen dioxide dissolves in atmospheric moisture forming nitric acid, the acid: pure fuming! Step of Ostwald ’ s process skin if it accidently falls on,., barium chloride, bronze, platinum etc. ) ) Zinc reacts dilute! From nitric acid obtained in laboratory is yellow in colour of cone sulphuric! Acid NaNO3 + H2S04 ( conc. ) on heating this salt, a brown-coloured gas not... Rewrite the correct word from the formulae listed below, choose, one, corresponding to the glass apparatus used... You to identify x, Y and Z, you are provided with the following: is., Pb ( NO3 ) 2, ZnCO3, ZnSO4.7H2O not formed,! Barium chloride, bronze, platinum etc. ) rise above 200°C the list substances – Acetylence,! Shape the comparing salt and free hydrogen water and oxygen the nature of the add O. N O... + 2NO + 3 [ O ] 2HNO3 ( dil. ) 9 Chemistry Maharashtra, nitric!, such as nitric oxide, nitrogen dioxide dissolves in HNO3 to give nitrogen,... Redissolves in the atmosphere reacts with nitric acid is strong oxidizing agent and the nascent oxygen oxidises in... Acids and the reaction involved the given description: AgCl, CuCO3, CuSO4 air through it apparatus used each.
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