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ncorrectIncorrect Incorrect IncorrectIncorrect Ma University Science Books presented by Sapling Learning neral Chemistry 4th Edition 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 for which AGxn -30.5 kJ/mol at 37.0 °C and pH 7.0. Calculate the value of AGrn in a biological cell in which [ATP]-5.0 mM, ADP] 0.90 mM, and [HPo.]-5.0 mM. Number AG44.54 kJ/ mol Is the hydrolysis of ATP spontaneous under these conditions? O yes O no is availablel clicking on the on the divider bar again to hide the additional feedback. Close

Explanation / Answer

Solution:

temp 37.0*27=310K

5.0mM is millimolar and you need molar so

5.0/1000= 0.0050 M of [ATP]

0.9/1000= 0.0009M [ADP]

5.0/1000= 0.0050 M of [HPO42-]

R= 8.314*10-3 kJ/mol K

now plug everything in to the equation
dG= -30.5+ [0.008314*310*In ((0.00500)(0.0009) / (0.0050)) ]
dG= -30.5 + (0.008314*310*In 0.0009)
dG= -30.5 + (-18.07)
dG= -48.58 kJ/mol

Since dG is negative , reaction is spontaneous

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