Question

An experiment begins with crystalline salt at the bottom of an otherwise empty glass. First, students add water to the glass. Then they mix the solution until the salt crystals dissolve completely. Rate the entropy of the water-salt system during this process from highest entropy to lowest entropy. Group of answer choices
a. The entropy of the system shortly after mixing begins > The entropy of the system after the salt dissolves completely > The entropy of the system right after adding the water
b. The entropy of the system after the salt dissolves completely > The entropy of the system shortly after mixing begins > The entropy of the system right after adding the water
c. The entropy of the system right after adding the water > The entropy of the system shortly after mixing begins > The entropy of the system after the salt dissolves completely
d. The entropy of the system after the salt dissolves completely > The entropy of the system right after adding the water > The entropy of the system shortly after mixing begins
e. The entropy of the system shortly after mixing begins > The entropy of the system right after adding the water > The entropy of the system after the salt dissolves completely
f. The entropy of the system right after adding the water > The entropy of the system after the salt dissolves completely > The entropy of the system shortly after mixing begins

Answer 1

Answer:

Explanation:

When we add salt to water entropy of the system increases because some amount of energy is released as salt dissolves in the water due to the dissociation of ions.      

Therefore entropy of the system after the salt dissolves is highest among them all and the least entropy is associated when mixing begins.

Entropy is the degree of randomness and it increases when salt dissociates to $Na^{+}\ and\ Cl^{-}$ as these ions are freer to move inside an aqueous solution compared to Previous state.