(please, I need some help)
When potassium nitrate is dissolved in water to a cooling notes . One can then conclude that:
a) the 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
e) there is a lowering of the freezing point of water.

Question

22-11-2015
Chemistry

contestada

(please, I need some help)
When potassium nitrate is dissolved in water to a cooling notes . One can then conclude that:
a) the 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
e) there is a lowering of the freezing point of water.

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taskmasters taskmasters · Answer 1 · 2015-11-22T12:00:55+01:00

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.