(i) What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of nitric acid?
(ii) State why for the preparation of nitric acid, the complete apparatus is made up of glass.

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Solution

(i) At appropriate temperature (below 473 K) reaction is:
$K N O_{3} + H_{2} S O_{4} \to K H S O_{4} + H N O_{3}$
potassium hydrogen sulphate forms
(ii) Nitric acid is highly corrosive and therefore destroys rubber and cork of the apparatus

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Similar questions

(a) (i) Explain, why only all glass apparatus should be used for the preparation of nitric acid by heating concentrated acid and potassium nitrate.
(ii) Write a chemical equation to illustrate the acidic nature of nitric acid.
(iii) Name the products formed when ammonium nitrate is heated.

Q. (i) What is special feature of the apparatus that is used in the laboratory preparation of nitric acid?
(ii) Why should the temperature of the reaction mixture of nitric acid not be allowed to rise above 200°C?

Q. (i) Explain, why only all glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
(ii) Write a chemical equation to illustrate the acidic nature of nitric acid.

Explain why

(a) Only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.

(b) Nitric acid is kept in a reagent bottle for a long time.

Q. Explain why [4 MARKS]
(a) Only all-glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
(b) Nitric acid, when kept in a reagent bottle for a long time, turns yellow.

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(i) What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of nitric acid?(ii) State why for the preparation of nitric acid, the complete apparatus is made up of glass.

(i) At appropriate temperature (below 473 K) reaction is:KNO3+H2SO4→KHSO4+HNO3potassium hydrogen sulphate forms(ii) Nitric acid is highly corrosive and therefore destroys rubber and cork of the apparatus

(i) What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of nitric acid?
(ii) State why for the preparation of nitric acid, the complete apparatus is made up of glass.

(i) At appropriate temperature (below 473 K) reaction is:
$K N O_{3} + H_{2} S O_{4} \to K H S O_{4} + H N O_{3}$
potassium hydrogen sulphate forms
(ii) Nitric acid is highly corrosive and therefore destroys rubber and cork of the apparatus