(a)
Interpretation:
The equation that shows temperature dependence of equilibrium constant with entropy is to be derived
Concept introduction:
The formula that determines spontaneity of the reaction is,
ΔG°=ΔH°−TΔS°
Where,
- ΔS° denotes entropy change of reaction.
- ΔH° denotes enthalpy change of reaction
The expression to evaluate free energy from equilibrium constant is as follows:
ΔG°=−RTlnK
Where,
- K represents equilibrium constant.
- ΔG° denotes standard free energy change.
- R denotes gas constant.
- T denotes temperature.
(b)
Interpretation:
The manner in that this equation can be used to determine experimental values of ΔH°, ΔS° should be explained.
Concept introduction:
The formula that determines spontaneity of the reaction is,
ΔG°=ΔH°−TΔS°
Where,
- ΔS° denotes entropy change of reaction.
- ΔH° denotes enthalpy change of reaction
The expression to evaluate free energy from equilibrium constant is as follows:
ΔG°=−RTlnK
Where,
- K represents equilibrium constant.
- ΔG° denotes standard free energy change.
- R denotes gas constant.
- T denotes temperature.
(c)
Interpretation:
Sign of ΔH° should be predicted on the basis of the given equation.
Concept introduction:
The formula that determines spontaneity of the reaction is,
ΔG°=ΔH°−TΔS°
Where,
- ΔS° denotes entropy change of reaction.
- ΔH° denotes enthalpy change of reaction
The expression to evaluate free energy from equilibrium constant is as follows:
ΔG°=−RTlnK
Where,
- K represents equilibrium constant.
- ΔG° denotes standard free energy change.
- R denotes gas constant.
- T denotes temperature.
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