Answer
An unfavorable entropy change is when the entropy decreases, which it does when there is more order.
So, if the products are more ordered than the reactants, the entropy has decreased, which means the change is unfavorable.
Work Step by Step
An unfavorable entropy change is when the entropy decreases, which it does when there is more order.
So, if the products are more ordered than the reactants, the entropy has decreased, which means the change is unfavorable.