Question

What happens when water’s salinity increases?

Mass decreases.
Freezing point decreases.
Buoyancy of objects decreases.
The amount of dissolved minerals decreases.

Answer 1

When waters salinity increases it’s freezing point will decrease. This is one of the reasons why people salt the roads after a snow storm.

Answer 2

Freezing point decreases.

Step-by-step explanation:

Decreasing of freezing point is a colligative property, which depends on the number of solute particles in the solution. As the number of solute particle increases the freezing point decreases.

Salt water has a lower freezing point than plain water.

Salt water does not have a different mass than plain water. Option A is incorrect.

Salt water does not affect the buoyancy or the mineral dissolved in it. Both option C and D are incorrect