Question

$2.5L$ of $NaCl$ solution contain $5$ moles of the solute. What is the molarity ?

• A. 5 M
• B. 2 M
• C. 2.5 M
• D. 12.5 M

Answer 1

Answer: (B)

Molarity $=\frac{\text{ Number of moles of solute }}{\text{ Volume of solution }(\text{ in }L)}$

$\Rightarrow$ Molarity $=\frac{5}{2.5}=2M$