On the basis of the following thermochemical data : ($\Delta _fG^oH^+_{(aq)}$ = 0) H2O(l) $\to$ H+(aq) + OH-(aq); $\Delta H$ = 57.32 kJ H2(g) + ${1 \over 2} O_2(g) \to$ H2O(l); $\Delta H$ = -286.20 kJ The value of enthalpy of formation of OH− ion at 25oC is :

Question

On the basis of the following thermochemical data :
($\Delta _fG^oH^+_{(aq)}$ = 0)

H₂O(l) $\to$ H⁺(aq) + OH^-(aq); $\Delta H$ = 57.32 kJ
H₂(g) + ${1 \over 2} O_2(g) \to$ H₂O(l); $\Delta H$ = -286.20 kJ

The value of enthalpy of formation of OH⁻ ion at 25^oC is :

-22.88 kJ

-228.88 kJ

+228.88 kJ

-343.52 kJ

Solution

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