Question

Which statement explains what happens when potassium chloride (KCl) dissolves in water?

a) KCl undergoes combustion.
b) KCl undergoes sublimation.
c) KCl undergoes dissolution.
d) KCl undergoes condensation.

Answer 1

When potassium chloride (KCl) dissolves in water, the ions are hydrated and the strong interionic forces binding the ions together are reduced. This leads to the ions moving off into solution as solvated ions, resulting in an increase in disorder and absorption of heat.

Step-by-step explanation:

When potassium chloride (KCl) dissolves in water, the polar water molecules are attracted to the charges on the K+ and Cl- ions. This attraction leads to the hydration of the ions, where water molecules surround the individual K+ and Cl- ions. As a result, the strong interionic forces that bind the ions together are reduced, allowing the ions to move off into solution as solvated ions. The dissolution of KCl in water increases the disorder of the system, resulting in the absorption of heat.

potassium chloride (KCl) dissolves in water, the ions are hydrated and the strong interionic forces binding the ions together are reduced. As a result, the strong interionic forces that bind the ions together are reduced, allowing the ions to move off into solution as solvated ions. This leads to the ions moving off into solution as solvated ions, resulting in an increase in disorder and absorption of heat.