Question

The molarity of a solution obtained by mixing 750 mL of 0.5M HCl with 250 mL of 2M HCl will be:
(IIT-JEE-2013)

• A. 1.00 M
• B. 1.75 M
• C. 0.975 M
• D. 0.875 M

Answer 1

The correct option is D 0.875 M

$M_1{V}_1+M_2{V}_2=MV$
$M=\frac{M_1{V}_1+M_1{V}_2}{V}=\frac{0.5\times 750+2\times 250}{1000}$
M = 0.875