The volume of oxygen liberated from 15ml of 20 volume h2o2 is
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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) ofH2O2=20 litre,
∴Oxygen liberate from 15 ml =(20/1000) x15 = 0.3 litre=300ml
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