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 be surmounted.
D) starch cannot be hydrolyzed in the presence of so much water.
E) starch hydrolysis is nonspontaneous.

Question

Quizplus · Accepted Answer

The hydrolysis of starch to sugar is an exergonic reaction, but the activation energy barrier for this reaction is high. Therefore, at room temperature, it cannot be surmounted, and the reaction does not readily occur to form a solution of simple sugars.

A Solution of Starch at Room Temperature Does Not Readily