A solution of `Al_(2)(SO_(4))_(3){d=1.253 gm//ml}` contain `22%` salt by weight. The molarity, normality and molality of the solution is

Options

A. `0.825 M, 48.3 N, 0.805` m
B. `0.805 M,4.83 N,0.825` m
C. `4.83M,4.83 N, 4.83` m
D. None

Answer

B

Explanation

Molarity =`( %xx10xxd)/(GMM) = (22xx10xx1.253)/(342) = 0.805M`
Normal ity =` (%xx10xx1.253)/(342//6) = 4.83 N`
Molality =` (22xx100)/(342(100-22)) = 0.825 m `