AgIO3 (s) → Ag+1 (aq) + IO3-1 (aq)

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Reaction Type:

Dissociation of an ionic compound in water

Enthalpy of Reaction

[1ΔHf(Ag+1 (aq)) + 1ΔHf(IO3-1 (aq))] - [1ΔHf(AgIO3 (s))]
[1(105.58) + 1(-221.33)] - [1(-171.13)] = 55.38 kJ
55.38 kJ     (endothermic)

Entropy Change

[1ΔSf(Ag+1 (aq)) + 1ΔSf(IO3-1 (aq))] - [1ΔSf(AgIO3 (s))]
[1(72.68) + 1(118.41)] - [1(149.37)] = 41.72 J/K
41.72 J/K     (increase in entropy)

Free Energy of Reaction (at 298.15 K)

From ΔGf° values:
[1ΔGf(Ag+1 (aq)) + 1ΔGf(IO3-1 (aq))] - [1ΔGf(AgIO3 (s))]
[1(77.12) + 1(-128.03)] - [1(-93.72)] = 42.81 kJ
42.81 kJ     (nonspontaneous)

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

Equilibrium Constant, K (at 298.15 K)

3.1593312405e-008
This process is not favorable at 25°C.

Enter an initial concentration for the ionic compound. Upon hitting submit, Ksp (3.1593312405e-008) will be used to calculate the equilibrium concentration for all species.

AgIO3 Ag+1 IO3-1
Initial M   0 0
Change -x +x +x
Equilibrium