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    Chemistry Study Set 3
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    Exam 18: Entropy, Free Energy, and Equilibrium
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    For the Reaction CuS(s)+ H<sub>2</sub>(g) H<sub>2</sub>S(g)+ Cu(s)\(\Delta\) G°<sub>f</sub> (CuS)= -53
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For the Reaction CuS(s)+ H2(g) H2S(g)+ Cu(s) Δ\DeltaΔ G°f (CuS)= -53

Question 1

Question 1

Short Answer

For the reaction CuS(s)+ H2(g)  For the reaction CuS(s)+ H<sub>2</sub>(g)   H<sub>2</sub>S(g)+ Cu(s),  \Delta G°<sub>f</sub> (CuS)= -53.6 kJ/mol  \Delta G°<sub>f</sub> (H<sub>2</sub>S)= -33.6 kJ/mol  \Delta H°<sub>f</sub> (CuS)= -53.1 kJ/mol  \Delta H°<sub>f</sub> (H<sub>2</sub>S)= - 20.6 kJ/mol Will this reaction proceed spontaneously at 298 K and 1 atm pressure? H2S(g)+ Cu(s),
Δ\DeltaΔ G°f (CuS)= -53.6 kJ/mol
Δ\DeltaΔ G°f (H2S)= -33.6 kJ/mol
Δ\DeltaΔ H°f (CuS)= -53.1 kJ/mol
Δ\DeltaΔ H°f (H2S)= - 20.6 kJ/mol
Will this reaction proceed spontaneously at 298 K and 1 atm pressure?

Correct Answer:

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