Problem: Use the standard entropy data in Appendix G to determine the change in entropy for each of the reactions listed below. All the processes occur at the standard conditions and 25 °C.(c) Cu(s) + S(g) ⟶ CuS(s)

FREE Expert Solution

 We can use the following equation to solve for ΔS˚rxn:


ΔS°rxn=S°f, prod-S°f, react


Note that we need to multiply each S˚ by the stoichiometric coefficient since S˚ is in J/mol • K.


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Problem Details

Use the standard entropy data in Appendix G to determine the change in entropy for each of the reactions listed below. All the processes occur at the standard conditions and 25 °C.


(c) Cu(s) + S(g) ⟶ CuS(s)

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