Question

distinguish between Sodium nitrate and sodium sulphate using dilute sulphuric acid​

Answer 1

Answer:

Explanation:

Sodium sulphite is the sodium salt of sulphurous acid having molecular formula Na2SO3​, can be made by dissolving NaOH in H2SO3. In ​Sodium sulphite, oxidation state of Sulphur is +4.

or

Sodium carbonate (Na2CO3) will effervesce when a dilute acid is added and a colourless, odourless gas (carbon dioxide) will be given off which, if bubbled through lime-water, will turn it cloudy. 

Sodium sulphite (Na2SO3) will effervesce when a dilute acid is added giving off a colourless gas with a choking smell (sulphur dioxide), which, if bubbled through acidified dichromate solution will turn it green.

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Answer 2

sodium sulphate; it is dissolved in water and barium chloride solution is added, an insoluble white precipitate of barium sulphate is obtained.

Na2SO4 + BaCl2 → BaSO4 + 2NaCl(White ppt)

Sodium sulphite ; it is warmed with dilute sulphuric acid, a colourless gas with a pungent and suffocating smell is evolved. When this gas is bubbled through acidified solution of potassium dichromate, it turns its colour from orange to green.

Na2SO3 + H2SO4 → Na2SO4 + H2O + SO2