Cells use the hydrolysis of adenosine triphosphate, abbreviated as ATP, as a source of energy. Symbolically, this reaction can be written as ATP1aq2 1 H2O1l2 h ADP1aq2 1 H2PO4 2 1aq2 where ADP represents adenosine diphosphate. For this reaction, DG8 5230.5 kJ/mol. a. Calculate K at 258C.