Question

CHEM-1220:

hemical Thermodynamics Coupled Reactions Resources « previous| 10 of 13 next >» Coupled Reactions Part A Consider these hypothetical chemical reactions In nature, one common strategy to make thermodynamically unfavorable reactions proceed is to couple them chemically to reactions that are thermodynamically favorable. As long as the overall reaction is thermodynamically favorable even the unfavorable reaction will proceed 1. A-B, 2.B-C, 3, C D, ΔG= 13.0 kJ/mol ΔG=-26.2 kJ/mol ΔG= 7.70 kJ/mol What is the free energy, ΔG, for the overall reaction, A D? Express your answer numerically in kilojoules per mole Hints G--13.9 kJ/mol Submit My Answers Give Up Incorrect; Try Again; 5 attempts remaining

Answer 1

1.      A-------------> B    $\Delta$ G = 13KJ

2      B---------------> C    $\Delta$ G   = -26.2Kj

3.    C---------------> D      $\Delta$ G   = 7.7Kj

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     A--------------------> D    $\Delta$ G = -5.5KJ