Describe how you would distinguish between sodium sulphite and sodium sulphate
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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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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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kritikagupta66:
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Explanation:
Sodium sulphate ( Na2SO4 ), the sulphate of soda, is an inorganic compound related with several hydrates. These all are white solids which are highly soluble in water. ... Sodium sulphite ( Na2SO3 ) is a soluble sodium salt of the sulphurous acid (Sulphite).when barium chloride is added to the sodium sulphate solution ,a precipitate is formed which is insoluble in all mineral acids. While sodium chloride does not react with barium chloride.
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