at-25-c-what-are-the-s-rxn-h-rxn-and-g-rxn-for-the-following-reaction-kcio4-s-kc

Question

At 25°C, what are the ΔS°_rxn, ΔH°_rxn, and ΔG°_rxnfor the following reaction?

KCIO₄ (s) → KCl (s) + 2 O₂ (g)

Is the reaction spontaneous? If not, will changing the temperature make it spontaneous? If so, should it be increased or decreased?

Accepted Answer

ΔS°_rxn = 0.342 kJ/K
ΔH°_rxn = -3.70 kJ
ΔG°_rxn = -106 kJ
The reaction is spontaneous

Answer

ΔS°_rxn = 0.137 kJ/K
ΔH°_rxn = 869 kJ
ΔG°_rxn = 829 kJ
The reaction is nonspontaneous but it can be made spontaneous by increasing the temperature.

Answer

ΔS°_rxn = 0.177 kJ/K
ΔH°_rxn = -437 kJ
ΔG°_rxn = -489 kJ
The reaction is spontaneous

Answer

ΔS°_rxn = 0.342 kJ/K
ΔH°_rxn = 869 kJ
ΔG°_rxn = 767 kJ
The reaction is nonspontaneous but it can be made spontaneous by decreasing the temperature.