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    Chemistry Study Set 2
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    Exam 17: Entropy Free Energy and Equilibrium
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    For the Reaction CuS(s)+ H<sub>2</sub>(g) <Sub> </Sub> H<sub>2</sub>S(g)+ Cu(s)\(\Delta\)
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For the Reaction CuS(s)+ H2(g)
H2S(g)+ Cu(s) Δ\DeltaΔ

Question 16

Question 16

Short Answer

For the reaction CuS(s)+ H2(g)  For the reaction CuS(s)+ H<sub>2</sub>(g)   <sub> </sub> 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?

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