A buffer solution is prepared by mixing 0.1 M ammonia and 1.0 M ammonium chloride. At 298 K, the pKb of NH4OH is 5.0. The pH of the buffer is
10.0
9.0
6.0
8.0
Conjugate acid of HF is
H+
HF
F
H2F2
D.
H2F2
The conjugate acid of HF is H2F2.
Water is well known amphoprotic solvent. In which chemical reaction water is behaving as a base?
H2SO4 + H2O → H3O+ + HSO
H2O + H2O → H3O+ + OH-
H2O + NH → NH3 + OH-
H2O + NH3 → NH + OH-
The standard emf of a cell, involving one electron change is found to be 0.591 V at 25°C. The equilibrium constant of the reaction is (F = 96500 C mol-1)
1.0 × 101
1.0 × 105
1.0 × 1010
1.0 × 1030