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Posted by on Sunday, March 30, 2014 at 9:08pm.

A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosphate, ADP, as described by ATP(aq)+H20(l)-->ADP(aq)+HPO4^2-(aq) for which Delta G°rxn = –30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of Delta Grxn in a biological cell in which [ATP] = 5.0 mM, [ADP] = 0.60 mM, and [HPO42–] = 5.0 mM.

  • Chemistry - , Sunday, March 30, 2014 at 10:24pm

    delta G rxn = dGo + RTlnQ where
    Q = (ADP)(HPO4^2-)/(ATP)

  • Chemistry - , Sunday, March 30, 2014 at 10:26pm

    Watch the units. dGo part in kJ and +RTlnK part in J

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