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It is customary to indicate the strength...

It is customary to indicate the strength of a sample of `H_2O_2` under specification of volume. The strength of `H_2O_2` solution can also be in %(w/v) or molarity or normality. 10 vol `H_2O_2` solution means Iml of `H_2O_2` solution decomposes to give 10ml of `O_2` gas at STP. 1 lit of `H_2O_2` solution decomposes to give 10 lit of `O_2` gas at STP.
The volume of 20V-`H_2O_2` solution, required to prepare 5 litres of oxygen at S.T.P is

A

125ml

B

250 ml

C

100 ml

D

50ml

Text Solution

Verified by Experts

The correct Answer is:
B
`x xx20 = 5000, x = 250 ml`
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