Q. The mole fraction of the solute in one modal aqueous solution is
A) 0.018
B) 0.027
C) 0.036
D) 0.048
Explanation
(a)
$w = 1000\ g\left( H_{2}O \right);n = 1\ mol$
$N = \frac{W}{M} = \frac{1000}{18} = 55.55$
$\mathcal{X}_{solute} = \frac{n}{n + N} + \frac{1}{1 + 55.55}$
$= 0.018$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.