On the basis of the following thermochemical data :
(Δf G° H+(aq) = 0).
H2O(l) → H+(aq) + OH–(aq); ΔH = 57.32kJ
H2(g)+ 1/2O2(g) →H2O(l); ΔH = − 286.2kJ
The value of enthalpy of formation of OH– ion at 25°C is
(a) – 22.88kJ
(b) – 228.88kJ
(c) + 228.88kJ
(d) – 343.52kJ