Question

The molarity of a solution containing $5.0g$ of $NaOH$ in $250mL$ solution is

• A. 0.1
• B. 0.5
• C. 1.0
• D. 2.0

Answer 1

Answer: (B)

Molanty $=\frac{\text{ number of moles of solute }}{\text{ volume of solution }}$
$=\frac{5\times 1000}{40\times 250}$
$[\because$ moles of $NaOH=\frac{5}{40}]=0.5M$