110218 - Bioenergetics (Chapter 6 p.217-229) standard state...

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1 CHM3400 - Lecture 18 Feb 18 Bioenergetics (Chapter 6 p.217-229) standard state in Biochem and PChem ATP energy storage anaerobic vs. aerobic glucose degradation efficiency
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2 Standard state: PChem vs. Biochem Physical Chemistry All reactants and products at 1 M concentration, including [H + ] = 1M Biochemistry H + at 10 -7 M concentration pH = 7 A + B C + x H + ) 1 / ] )([ 1 / ] ([ ) 1 / ] )([ 1 / ] ([ ln M B M A M H M C RT G G o r r + + Δ = Δ ) 1 / ] )([ 1 / ] ([ ) 10 / ] )([ 1 / ] ([ ln ' 7 M B M A M H M C RT G G o r r + + Δ = Δ Standard Gibbs free energy for 1M H + Standard Gibbs free energy for 1x10 -7 M H + 7 10 1 1 ln ' + Δ = Δ xRT G G o r o r H + as product : If x = 1 and T = 298 K ) ( 93 . 39 ' 1 + Δ = Δ kJmol G G o r o r
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3 Gas-phase reaction equilibrium C + x H + A + B 7 10 1 1 ln ' Δ = Δ xRT G G o r o r H + as reactant : If x = 1 and T = 298 K ) ( 93 . 39 ' 1 Δ = Δ kJmol G G o r o r In what standard state (Biochem or PChem) is H + as reactant more favorable?
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110218 - Bioenergetics (Chapter 6 p.217-229) standard state...

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