Question

The volume strength of $15\%$ (w/v) solution of $H_2{O}_2$ is :

• A. $50$
• B. $4.94$
• C. $494$
• D. $0.494$

Answer 1

Answer: (A)

The solution is $15\%\left(w/v\right)$. It means $100ml$ of solution contains $15$ g of hydrogen peroxide.
The concentration in g/L is $\frac{15}{100}\times 1000=150g/L$.
The relationship between the concentration in g/L and the volume strength $\text{x}$ is
Conc. in g/L $=\frac{680\times \text{(x)}}{224}g/L$