Question

Rob is attempting to dissolve rock salt in warm water but it is a slow process. How could he most effectively increase the rate of solution of the rock salt?

A. Decrease the temperature of the water.
B. Increase the concentration of the salt.
C. Grind the rock salt into smaller pieces.
D. Agitate the rock salt and the cool water.

Answer 1

Grinding the rocks into smaller pieces(C)

Answer 2

C. Grind the rock salt into smaller pieces.

increased surface area by decreasing particle size will increase the rate of dissolution