Why is ADP more stable than ATP?

Answer 1

Adensosine Di-Phosphate is at a lower energy configuration than Adenosine Tri-Phosphate. When we have the hydrolysis reaction of ATP such that ATP+H20→ADP+Inorganic Phosphate+Energy, the Inorganic Phosphate has more stability as the split off phosphorus has more resonance configurations to achive stability. Also, the phosphate groups of ATP are repelled by the negative charges on theconsecutiveoxygen's bonded tophosphorus, thus ATP is much more stable than ADP. As a result, ATP→ADP is an important process as it isspontaneous as the splitting reaction into smaller molecules wants to occur, and would thus release stored energy which was originally needed to convert ADP→ATP.

Answer 2

ADP is more stable than ATP because it has lower energy potential due to the removal of one phosphate group. ATP is a high-energy molecule used for cellular processes, so it is more prone to hydrolysis to release energy quickly. ADP, with less energy stored in its bonds, is less likely to spontaneously hydrolyze and release energy.