Question

question 15 of 25
how is entropy related to the spontaneity of a reaction?
a. $delta s<0$ contributes to spontaneity.
b. $delta s>0$ contributes to spontaneity.
c. $delta s = 0$ contributes to spontaneity.
d. $delta s$ does not affect spontaneity.

Explanation:

A positive change in entropy ($\Delta S>0$) indicates an increase in the disorder of the system. Spontaneous reactions tend to increase the entropy of the universe. According to the second - law of thermodynamics, a reaction is more likely to be spontaneous when $\Delta S>0$.

Answer:

B. $\Delta S > 0$ contributes to spontaneity.