The mole fraction of water in `20% (wt.//wt.)` aqueous solution of `H_(2)O_(2)` is:

Options

A. `(77)/(68)`
B. `(68)/(77)`
C. `(20)/(80)`
D. `(80)/(20)`

Answer

B

Explanation

Mole fraction of `H_(2)O=((80)/(18))/((80)/(18)+(20)/(34))=(68)/(77)`.