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Consider the following three reactions. For each of the reactions, use data in Appendix C in...

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Chemistry

Consider the following three reactions. For each of thereactions, use data in Appendix C in the textbook to calculate ΔH∘,ΔG∘, and ΔS∘ at 25 ∘C.

Calculate ΔS∘ for C2H6(g)+7Cl2(g)→2CCl4(g)+6HCl(g) Express youranswer using three significant figures.

Calculate ΔG∘ for C2H6(g)+7Cl2(g)→2CCl4(g)+6HCl(g) Express youranswer using four significant figures.

Calculate ΔH∘ for BaO(s)+CO2(g)→BaCO3(s) Express your answerusing four significant figures.

Calculate ΔG∘ for BaO(s)+CO2(g)→BaCO3(s) Express your answerusing four significant figures.

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3.9 Ratings (679 Votes)

C2H6(g)+7Cl2(g)→2CCl4(g)+6HCl(g)

ΔS∘rxn = ΔS∘f products - ΔS∘f reactants

            = 6*186.9+2*309.85 - (229.6+7*223)

            = -49.5J/mole-K

C2H6(g)+7Cl2(g)→2CCl4(g)+6HCl(g)

ΔG∘rxn = ΔG∘f products - ΔG∘f reactants

              = 6*-95.3 + 2*-60.6 -(-32.82 + 7*0)

             = -660.2KJ/mole

BaO(s)+CO2(g)→BaCO3(s)

ΔH∘rxn = ΔH∘f products - ΔH∘f reactants

              = 112.1-(70.4 + 213.6)

               = -171.9KJ/mole

BaO(s)+CO2(g)→BaCO3(s)

ΔG∘rxn = ΔG∘f products - ΔG∘f reactants

               = -1137-(-520.4 -394.4)   = -222.2KJ/mole
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