Question

An aqueous solution of $NaOH$ having density $1.1$ $kg/{dm}^3$ contains $0.02$ mole fraction of $NaOH$. The strength of $NaOH$ solution is :

• A. $30.44$
• B. $45.36$
• C. $39.44$
• D. $47.7$

Answer 1

The correct option is D $47.7$

$\begin{array}{cc}\text{Strength}& =\frac{\text{Weight of Solute}}{\text{Volume of Solution in}\left(l\right)}\\ =\frac{1.134\times 40\times 1000}{950.32}& \\ =47.7& \end{array}$