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0.2 M aqueous solution of NaOH ( Mole m...

0.2 M aqueous solution of NaOH ( Mole mass =40 ) .Find mole fraction of NaOH.
[Given `:` Density of solution = 1 kg `// dm^(3)` ]

A

`3.6 xx 10^(-3)`

B

`3.6 xx 10^(-4)`

C

`3.6 xx 10^(-6)`

D

` 3.6 xx 10^(-7)`

Text Solution

Verified by Experts

The correct Answer is:
A
`n_(B) = 0.2, n_(A) =(1000)/( 18) , X_(B) =(n_(B))/(n_(A)+n_(B))`
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