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A white solid is either Na(2)O or Na(2)O...

A white solid is either `Na_(2)O or Na_(2)O_(2)`. A piece of red litmus turns white when it is dipped into freshly prepared aqueous solution of the white solid. Identify the substance and explain with the help of balanced equation what would happen to the red litmus if the white solid were the other compound.

Text Solution

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(i) As the red litmus paper has turned white by dipping in the aqueous solution of the white solid, this means that it has been alcohol. This bleaching can be done by `H_(2)O_(2)` which is formed by adding water of `Na_(2)O_(2)`.
`underset("Sod.perioxide")(Na_(2)O_(2))+2H_(2)O to 2NaOH+H_(2)O_(2)`
(ii) As the red litmus changed to blue, this means that the solution of the white solid is basic in nature. This can be obtained by dissolving `Na_(2)O` in water.
`Na_(2)O+H_(2)O to 2NaOH`
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