Density of a 3 molar aqueous solution of `Na_(2)S_(2)O_(3)` is `1.482gm//ml`. Calculate mole fracrtion of `Na_(2)S_(2)O_(3)` in solution.

Options

A. 0.054
B. 0.06
C. 0.03
D. 0.072

Answer

1

Explanation

`{:(3 to Na_(2)S_(2)O_(3), to," 1000 ml sol"),(n_(B)=3,,w_(s)=1482 gm):}`
`w_(B)=3xx(46+64+48) =474`
`x=3/(3+56) =0.054`