Question

How do we differentiate between a sodium sulphate and sodium nitrate?

Answer 1

Heating Test & Reaction with Potassium dichromate solution: Sodium nitrate: On heating sodium nitrate will produce reddish brown coloured gas.. When this gas passed through acidified Potassium dichromate solution turns the solution into brown. Sodium sulphate: On heating Sodium sulphate produces colourless gas. When this gas passed through acidified Potassium dichromate solution turns the solution into green.

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