Questions
5.0 cm3 of H2O2 liberates 0.508 g of iodine from an acidified KI solution. The strength of H2O2 solution in terms of volume strength at STP is
detailed solution
Correct option is B
VH2O2=5ml WI2=0.508gr MWI2=2×127=254gr H2O2+2KI→H+I2+2KOH 1mole →1mole ?? → 2×10-3 mole 2×10-3×11 M=2×10-3×10005 M=0.4MFor H2O210 vol.strength = =0.893M = 1.786N = 3.03%(W/V)?? - … = 0.4M = 4.47 volSimilar Questions
100 cm3 of a given sample of H2O2, gives 1000 cm3 of O2 at STP. The given sample is
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