Question

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?

Answer 1

Answer:

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.