Explain the following:
All glass apparatus is used in the laboratory preparation of nitric acid.

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Solution

Nitric acid $({HNO}_{3})$ is a strong oxidizing agent.
Nitric acid is highly corrosive.
As nitric acid is highly corrosive and strong oxidizing agent, it reacts with rubber, plastics, metals etc.
Hence, all glass apparatus is used in the laboratory preparation of nitric acid, as it doesn't react with glass.

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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.

(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. Give reasons for the following:
(i) In laboratory preparation of nitric acid all the apparatus including cork should be made up of glass.
(ii) Commercial nitric acid is yellow in colour, but when it is diluted with water, it turns colourless.
(iii) Aluminium does not react with nitric acid of any concentration.
(iv) Conc. nitric acid renders iron passive.
(v) Nitric acid is used in purification of gold.
(vi) Aqua regia dissolves gold and platinum.
(vii) Nitric acid usually does not yield hydrogen from acids.
(viii) Lightning is a blessing in disguise.
(ix) Concentrated nitric acid is brown in colour.
(x) Concentrated nitric acid is a stronger oxidizing agent.

Q. Explain the following: An all glass apparatus is used in the laboratory preparation of nitric acid.

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Explain the following:All glass apparatus is used in the laboratory preparation of nitric acid.

Nitric acid HNO3 is a strong oxidizing agent.Nitric acid is highly corrosive.As nitric acid is highly corrosive and strong oxidizing agent, it reacts with rubber, plastics, metals etc.Hence, all glass apparatus is used in the laboratory preparation of nitric acid, as it doesn't react with glass.

Explain the following:
All glass apparatus is used in the laboratory preparation of nitric acid.