A solution of starch at room temperature does not readily decompose to form a solution of simple sugars because
A) the starch solution has less free energy than the sugar solution.
B) the hydrolysis of starch to sugar is endergonic.
C) the activation energy barrier for this reaction cannot easily be surmounted at room temperature.
D) starch cannot be hydrolyzed in the presence of so much water.
E) starch hydrolysis is nonspontaneous.

Question

Quizplus · Accepted Answer

The activation energy barrier for the hydrolysis of starch to simple sugars is high, meaning that it requires a significant amount of energy to proceed. At room temperature, the average kinetic energy of the molecules in the solution is not sufficient to overcome this barrier, so the reaction does not occur readily.

A Solution of Starch at Room Temperature Does Not Readily