Question

Calculate the volume of concentrated sulphuric acid (molarity = 18 M) required to prepare 250 mL of 2 M acid solution.

• A. 27.8 mL
• B. 15.4 mL
• C. 20.5 mL
• D. 23.6 mL

Answer 1

The correct option is A 27.8 mL

As per the concept of dilution,
$M_1{V}_1=M_2{V}_2\Rightarrow (18\times V_1)=(2\times 250)\Rightarrow V_1=27.8mL$
Volume of concentrated $H_{2}S{O}_4$required= 27.8 mL