The strength of 11.2 volume solution of H2O2 is: [Given that molar mass of H = 1 g mol-1 and O = 16 g mol-1]

Question

The strength of 11.2 volume solution of H2O2 is: [Given that molar mass of H = 1 g mol-1 and O = 16 g mol-1] (A) 13.6 % (B) 3.4 % (C) 34 % (D) 1.7 %

Tardigrade Admin · Accepted Answer

underset68 g / L 2 H 2 O 2 longrightarrow 2 H 2 O + underset22.4 textof O2( STP ) O 2 uparrow 11.2 L of O 2 is given by 34 g of H 2 O 2 present in 1 L of H 2 O 2 solution. So % strength of H 2 O 2=(34/1000) × 100=3.4 g / 100 mL =3.4 %

Q. The strength of $11.2$ volume solution of $H_{2} O_{2}$ is : [Given that molar mass of $H = 1 g$ $m o l^{- 1}$ and $O = 16 g m o l^{- 1}]$

$13.6%$

$3.4%$

$34%$

$1.7%$

$68 g / L 2 H_{2} O_{2} ⟶ 2 H_{2} O + 22.4 of O_{2} (STP) O_{2} ↑$
$11.2 L$ of $O_{2}$ is given by $34 g$ of $H_{2} O_{2}$ present in $1 L$ of $H_{2} O_{2}$ solution.
So $%$ strength of $H_{2} O_{2} = \frac{34}{1000} \times 100 = 3.4 g /100 m L = 3.4%$

Q. The strength of 11.2 volume solution of H2​O2​ is : [Given that molar mass of H=1g mol−1 and O=16gmol−1]

13.6%

3.4%

34%

1.7%