It is customary to indicate the strength of a sample of H_(2)O_(2) under specification of volume. The strength of H_(2)O_(2)solution can also be in %(w/v) or molarity or normality,"10 Vol H_(2)O_(2)solution means I ml ofH_(2)O_(2) solution decomposes to give 10 ml of O_(2) gas at STP. 1 lit of H_(2)O_(2)solution decomposes to give 10 lit of O_(2)gas at STR. The volume of ''20 V H_(2)O_(2) solution required to prepares is 5 litres of oxygen at STP is

It is customary to indicate the strength of a sample of H_(2)O_(2) und

1.	It is customary to indicate the strength of a sample of H_(2)O_(2) under specification of volume. The strength of H_(2)O_(2)solution can also be in %(w/v) or molarity or normality,"10 Vol H_(2)O_(2)solution means I ml ofH_(2)O_(2) solution decomposes to give 10 ml of O_(2) gas at STP. 1 lit of H_(2)O_(2)solution decomposes to give 10 lit of O_(2)gas at STR. The volume of ''20 V H_(2)O_(2) solution required to prepares is 5 litres of oxygen at STP is
Answer» 125 ML 250 ml 100 ml 50 ml Solution :`X XX 20=5000 , x=250 ml`