100 cm3 of a given sample of H2O2, gives 1000 cm3 of O2 at STP. The given sample is
10% H2O2
90% H2O2
10 volume H2O2
100 volume H2O2
100 cm3 H2O2 gives 1000 cm3 O2 at STP
1 cm3 H2O2 gives 10 cm3 O2 at STP ⇒ 10V H2O2