Question

Percentage strength of 50V H2O2 solution is

Choose answer:

5%


10%


15%


20%

Answer 1

Answer:

10 percentage is correct answer

Answer 2

Option 3rd (15%)

Percentage strength of 50 volume $H_{2}O_{2}$ solution is 15%.

Explanation:

On decomposition of $H_{2}O_{2}$ , $H_{2}O_$ and $O_{2}$ molecule is produced.

50 volume $H_{2}O_{2}$ solution means that 1 L of 50 volume $H_{2}O_{2}$ on decomposition  gives 50 L of $O_{2}$ at NTP.

                           $2H_{2}O_{2}\rightarrow2H_{2}O+O_{2}$

                      2(2+32)g     22.4 L at NTP

                           68 g

22.4 L of  $O_{2}$ at NTP is produced from = 68 g of $H_{2}O_{2}$ solution

∴ 50 L of $O_{2}$ at NTP is produced from = $\frac{68}{22.4}\times 50$ = $151.78$ g  of $H_{2}O_{2}$ solution

But 50 L of $O_{2}$ at NTP are produced from 1 L of 50 volume $H_{2}O_{2}$ solution.

∴ Strength of $H_{2}O_{2}$ solution in 50 volume $H_{2}O_{2}$ = $151.78$ g

Percentage strength of  $H_{2}O_{2}$ solution = $\frac{151.78}{1000}\times 100$

                                                                = 15 %

So, the Percentage strength of 50 volume $H_{2}O_{2}$ solution is 15%.