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Question

The volume of oxygen liberated from 15 ml of 20 volume H2O2 is


A

250 ml

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B

300 ml

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C

150 ml

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D

200 ml

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Solution

The correct option is B

300 ml


Quantity of H2O2 = 15ml and volume of H2O2 = 20

We know that 20 volume of H2O2 means 1 litre of this solution will give 20 litre at NTP

Since,oxygen liberated from 1000ml (1 litre) of H2O2 = 20 litre,

Oxygen liberate from 15 ml = 201000×15 = 0.3 litre = 300ml


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