Ag2CrO4 (s) → 2 Ag+1 (aq) + CrO4-2 (aq)

Back to reactions list

 

Reaction Type:

Dissociation of an ionic compound in water

Enthalpy of Reaction

[2ΔHf(Ag+1 (aq)) + 1ΔHf(CrO4-2 (aq))] - [1ΔHf(Ag2CrO4 (s))]
[2(105.58) + 1(-881.15)] - [1(-731.74)] = 61.75 kJ
61.75 kJ     (endothermic)

Free Energy of Reaction (at 298.15 K)

From ΔGf° values:
[2ΔGf(Ag+1 (aq)) + 1ΔGf(CrO4-2 (aq))] - [1ΔGf(Ag2CrO4 (s))]
[2(77.12) + 1(-727.85)] - [1(-641.83)] = 68.22 kJ
68.22 kJ     (nonspontaneous)

From ΔG = ΔH - TΔS:
68.31 kJ     (nonspontaneous)

Equilibrium Constant, K (at 298.15 K)

1.1161127199e-012
This process is not favorable at 25°C.

Enter an initial concentration for the ionic compound. Upon hitting submit, Ksp (1.1161127199e-012) will be used to calculate the equilibrium concentration for all species.

Ag2CrO4 Ag+1 CrO4-2
Initial M   0 0
Change -x +2x +x
Equilibrium