(please, I need some help)

When potassium nitrate is dissolved in water to a cooling notes . One can then conclude that:

Athe solubility of the salt increases with temperature .

b ) the salt is poorly dissociated in water.

c ) the salt solubility decreases with temperature .

d ) the salt dissociated in water is very

Ethere is a lowering of the freezing point of water.

Verified Answer :

c) the salt solubility decreases with temperature.

Salts usually dissolve in water at a given temperature. When water cannot dissolve anymore salt at that same temperature, it is known as a saturation point. With most substances the solubility increases with increase in temperature. Same is the case for a salt like potassium nitrate. With increase in temperature the ability of it to dissolve in water increases. And so with decrease in temperature, the solubility decreases.