8g of NaOH is dissolved in 18g of H(2)O....

8g of NaOH is dissolved in 18g of `H_(2)O`. Mole fraction of NaOH in solution and molality (in mol `kg^(-1)`) of the solutions respectively are:

A

`0.1,11.11`

B

`0.167,11.11`

C

`0.2,22.20`

D

`0.167,22.20`

Verified by Experts

The correct Answer is:

B

`X_(NaOH) = (8//40)/([(8)/(40) + 1]) = 0.167 , m = (8//40)/(0.018) = 11.11`

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