Question

The molarity of the solution obtained by mixing 750 mL of $H_{2}O$ with 250 mL of 2 M $HCl$ will be:

• A. 0.50 M
• B. 0.75 M
• C. 1.50 M
• D. 0.95 M

Answer 1

The correct option is A 0.50 M

Applying concept of mixing,
$M_1{V}_1=M_2{V}_2$
where $V_2$ is the final volume.
$\Rightarrow (2\times 250)=(M\times 1000)$
Molarity of mixture = 0.50 M