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Sulphur disappears when boiled with an a...

Sulphur disappears when boiled with an aqueous solution of sodium sulphite. Why ?

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S reacts with `Na_(2)SO_(3)` to form sodium thiosulphate `(Na_(2)S_(2)O_(3))` and hence S disappears.
`Na_(2)SO_(3) + S rarr Na_(2)S_(2)O_(3)`
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  2. (a) Suggest a quantitative method for estimation of a gas which protec...

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