Chemistry, asked by kumarkartikeyamishra, 5 months ago

why calcium nitrate is not used in preparation of nitric acid but pottasium and sodium nitrate is used

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Answered by Anonymous

The temperature of the mixture of concentrated sulphuric acid and sodium nitrate should not exceed 200oC because sodium sulphate formed at higher temperature forms a hard crust which sticks to the walls of the retort and is difficult to remove. At higher temperature nitric acid may also decompose

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