Half litre each of three samples of  H2O2 labeled 10 vol, 15 vol, 20 vol. are mixed and then diluted with equal vol. of water calculate relative strength of resultant H2O2 solution.

V.S=N×5.610 volume of  H2O2=105.6N15 volume of  H2O2=155.6N20 volume of H2O2=205.6NTotal volume of = 500 + 500 + 500 = 1500 mlAfter dilution volume of solution = 3000 mlN=105.6×500+155.6×500+205.6×5003000=4107.133000=1.369NV.S=N×5.6=1.369×5.6=7.5