Question

A solution of hydrogen peroxide contains 6.8g $H_2{O}_2$ per 100ml. The molarity of this solution is:

• A. 3.77
• B. 2.5
• C. 0.38
• D. 2

Answer 1

The correct option is D 2

$Molarity$ = $\frac{Wt}{G.Mwt}$ x $\frac{1000}{V}$

Molecular Wt of $H_2{O}_2$ is 34. Wt is 6.8g

$Molarity$ = $\frac{6.8}{34}$ x $\frac{1000}{100}$

$Molarity$ = 2.0 M