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Question

50 ml of a certain sample of H2O2 gives 1200 ml of O2 at STP. The volume strength of H2O2 is:
  1. 22.4 V
  2. 24 V
  3. 20 V
  4. 11.2 V

A
11.2 V
B
22.4 V
C
20 V
D
24 V
Solution
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It is given that 50 ml of a certain sample of H2O2 gives 1200 ml of O2 at STP.

Volume strength is the volume of oxygen at STP given by one volume sample of hydrogen peroxide on heating.

If 50 ml of H2O2 gives 1200 ml of O2, then volume strength will be =120050=24 V

Hence, the volume strength of H2O2 is 24 V.

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