2 KMnO 4 + 3 H 2 SO 4 + 5 H 2 O 2 → K 2 SO 4 + 2 MnSO 4 + 8 H 2 O + 5 O 2 Find the nonnality of H 2 O…

2KMnO4+3H2SO4+5H2O2→K2SO4+2MnSO4+8H2O+5O2
Find the nonnality of H2O2 solution, if 20 mL of it is required to react completely with 16 mL of 0.02MKMnO4 solution. ( Molar mass of KMnO4=158 g mol-1)
  1. 4×10-2 N
  2. 2×10-2 N
  3. 6×10-2 N
  4. 8×10-2 N

Solution

n.f. of H2O2=2

n.f. of KMnO4=5

Number of mequivalents of H2O 2=Number of mequivalents of KMnO4

N1V1=N2V2

N1=N2V2V1=(0.02×5)×1620=0.08 N

Asked in: AP EAMCET 2018 (25 Apr Shift 1)

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