There is a sample of 10 volume of hydrogen peroxide solution. Calculate its strength.
H2O2 → H2O + 12 O2 ×2 2H2O268 g → H2O +O2 22.4 litres at N.T.P. ∵ 22.4 litres O2 at N.T.P. obtained by 68 g of H2O2 ∴ 10 litres O2 at N.T.P. obtained by 6822.4 × 10 = 30.35 g /litre ∴ 1000 ml O2 at N.T.P. obtained by =30.35 g ∴ 100 ml O2 at N.T.P. obtained by 30.351000 × 100=3.035%