Question

The formula weight of $H_2{SO}_4$ is 98. The weight of the acid in 40mL of 0.1 M solution is:

• A. 2.45 g
• B. 3.92 g
• C. 4.90 g
• D. 9.8 g

Answer 1

The correct option is B 3.92 g

No of moles of $H_{2}S{O}_4$ $=0.1\times \frac{40}{1000}$

$=0.04$ mol

$\therefore$ Weight of the acid $=0.04\times 98$

$=3.92gm$

Hence, option $B$ is correct.