A commercial sample of hydrogen peroxide is labelled as 10 volume. Its percentage strength is nearly

Strength of a solution is defined as the weight of the solute present in one-litre solution. 1 mL of “10 volume 2 2 H O ” on decomposes will produce 10 mL oxygen 2 O According to the balanced chemical equation, 2 2 2 2 2 2 H O H O O → 2 2 2 2 1 2 16 gramsof H O xx → 22,400mL of 2 O (at NTP) 68 grams of 2 2 2 22,400 H O mLof O → x grams of 2 2 2 10 H O mLof O → Solving for x, we get 10 mL of 2 O is obtained from 10 68 22,400 x grams of 2 2 2 2 1 H O mL of H O HYDROGEN 33 100 mL of 2 2 H O solution contains 10 68 680 100 3.035% 22,400 224 x x Therefore, the percentage strength o