Question

There is a sample of 10 volume of hydrogen peroxide solution. Calculate its strength

• A. 3.00%
• B. 4.045%
• C. 2.509%
• D. 3.035%

Answer 1

The correct option is D

3.035%

$[H_2{O}_2\to H_{2}O+\frac{1}{2}{O}_2]\times 2$

2$H_2{O}_2$ (68g)$\to$ 2$H_{2}O$ +$O_2$ 224 litre at NTP.

$\because$ 224 litre $O_2$ at NTP obtained by 68g, of $H_2{O}_2$

$\therefore$10 litre $O_2$ at NTP obtained by $\frac{68}{22.4}\times$ 10 =30.35gm $litr{e}^{-1}$

$\therefore$1000 ml $O_2$ at NTP obtained =30.35gm

$\therefore$100 ml $O_2$ at NTP obtained =$\frac{30.35}{1000}\times$ 100=3.035%