Question

- Heating is necessary for dry test of nitrate anion, why?​

Answer 1

Answer:

The nitrate ion can easily be identified by heating copper turnings along with concentrated sulphuric acid. Here sulphuric acid reacts with the nitrate ion to form nitric acid. Nitric acid then reacts with the copper turnings to form nitric oxide. Nitric oxide is thus oxidised to nitrogen dioxide.

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Explanation:

Answer 2

Reason for heating is necessary for dry test of nitrate anion:

• Heating is important in dry test because in this testing the nitrate ion taken can be identified by heating with copper turnings in the presence of Sulfuric acid.

• As a result of heating, Nitrate ion reacts with Sulfuric acid to produce nitric acid.

• The nitric acid so produced is then reacted with the copper turnings to form an oxide of nitric.

• This Nitric oxide is then oxidized to form nitrogen dioxide gas.

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