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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 paper turns white when it is dipped into a freshly made aqueous solution of the white solid.
a. Identify the substance and explain the balanced equation.
b. Explain what would happen to the red litmus if the white solid were the other compound.

Text Solution

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(i) `Na_(2)O_(2)` is powerful oxidant and bleacing agent and bleaches red litmus paper to white in aqueous solution state.
`Na_(2)O_(2)+2HO rarr 2NaOH+H_(2)O+[O]`
(ii) The other compound `Na_(2)O` will give `NaOH` on dissolution in water. The red litmus will turn to blue.
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