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ICSE Class X Notes 2020 : Chemistry : Nitric Acid

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Sia Sen
Euroschool Airoli, Mumbai
10th icse
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Important Question: ICSE 2010 Class 10th (Nitric Acid) Q.1. 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. Ans.: B = dilute nitric acid. Q.2. Copy and complete the following table relating to an important industrial process. Output refers to the product of the process not the intermediate steps. Name of process Inputs Catalyst Equation for catalyzed reaction Ammonia + air Output Nitric acid Ans.: Name of process Inputs Catalyst Equation for catalyzed reaction Output Ostwald s process Ammonia + air Platinum 4NH3 + 5O 2 4NO + 6H 2O + 21.5 K cals. Nitric acid Q.3. What is the property of nitric acid which allows it to react with copper. Ans.: Oxidizing nature of nitric acid. Q.4. Write the equaton for the following reaction : Dilute nitric acid and copper. Ans.: 3Cu + 8HNO3 3Cu(NO3 )2 + 4H2 O + 2NO. Q.5. Write a balanced equation for the reaction of nitrogen monoxide and oxygen. Ans.: NO + O 2 2NO 2 . Q.6. i. Write the equation for the preparation of nitric acid from potassium nitrate. ii. What compounds are required for the laboratory preparation of nitric acid? iii. Choose the correct word from the brackets to complete the sentence. Sodium nitrate reacts with _______ [concentrated / dilute] sulphuric acid to produce nitric acid. Write equation for the same. Ans.: i. <200 C KNO 3 + H2 SO 4 (conc.) KHSO4 + HNO 3 ii. a. Concentrated sulphuric acid and b. Nitre or Chile salt petre. iii. Concentrated. NaNO 3 + H2 SO 4 (conc.) NaHSO4 + HNO 3.

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