Which statement is true about the relationship between entropy and spontaneity? O Spontaneous reactions tend to lead to higher entropy. O Entropy is the same as spontaneity. As entropy increases, spontaneity decreases. o As entropy increases, spontaneity is unaffected. nics?

Question

Brielle Dodson

Chemistry

3 December, 11:06

Which statement is true about the relationship between entropy and spontaneity? O Spontaneous reactions tend to lead to higher entropy. O Entropy is the same as spontaneity. As entropy increases, spontaneity decreases. o As entropy increases, spontaneity is unaffected. nics?

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Answers (1)

Know the Answer?

Neil York · Answer 1

The true statement is: Spontaneous reactions tend to lead to higher entropy.

Explanation:

The spontaneity of a reaction is linked to the value of Gibbs free energy (ΔG°). The more negative is this value, the more spontaneous is a reaction. At the same time, Gibbs free energy depends on enthalpy (ΔH°) and entropy (ΔS°), according to the following expression:

ΔG° = ΔH° - T.ΔS°

We can see that higher entropies (higher ΔS°) lead to more negative ΔG°, thus, more spontaneous reactions.