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Q.

Volume strength of hydrogen peroxide is 22.4. What volume of this sample is required for the oxidation of 3.4 g of hydrogen sulphide?

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a

200 mL

b

100 mL

c

5 mL

d

50 mL

answer is A.

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Detailed Solution

H2​S+H2O2​⟶2H2O+S

34g H2S reacts with 34g H2O2​

3.4gH2​S reacts with 3.4gH2O2​

Volume strength 22.4 means 22.4×3.035=67.98g/L

67.98g are present in one liter. 3.4g are present in

67.981​×3.4=0.05L=50mL

correct answer is 1

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