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The strength of 11.2 volume solution of $\text{H}_2\text{O}_2$ 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%
(11). (2 V means 11.2 L of $\text{O}_2$ at STP = 0.5 mol $\text{O}_2$, so 1 mol $\text{H}_2\text{O}_2$ (34 g) per litre. Strength = $34/1000 \times 100 = 3.4%$.)
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