Question

sulphur disappear when boiled with an aqueous solution of sodium sulphite?

Answer 1

Sulphur disappears when boiled with aq. solution of sodium sulphite because of the formation of sodium thiosulphate.The reaction is as follows:

NA2SO3 + S ----------> NA2S2O3
sodium Sulphite

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Answer 2

Sulphur disappear when boiled with an aqueous solution of sodium sulphite because sodium thiosulphate is formed.

• Sodium thiosulphate is soluble in water and so we can observe this disappearance easily in water.

• The chemical reaction is

Na2SO3+S --->Na2S2O3

Sodium reacts with Na2SO3 to form sodium thiosulphate in this reaction Sulphur disappears.

• Sodium thiosulphate is an inorganic compound, it is a colorless crystal.

• This is well dissolved in water. It is used in the treatment of cyanide poisoning.