Question

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

Answer 1

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

Answer 2

Explanation:

20 vol

1lt of H2O2 = 20 lt of O2 gas liberated

like wise,

15 ml of H2O2 = 300ml of O2 gas liberated

therefore answer is 300 ml