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The mole fraction of water in 20% aqueous solution of $H_2O_2$ is :


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mole fraction of water =$\large\frac{80/18}{80/18+20/34}$
$\Rightarrow \large\frac{68}{77}$
Hence (b) is the correct option.
answered Oct 25, 2013 by sreemathi.v

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