How do temperature changes lead to solubility changes for salt dissolved in water?

Question

A. High temperatures mean more of the salt will be in the liquid form as it gradually melts, increasing solubility
B. High temperatures mean more of the salt will be in the gas form, causing it to evaporate out of the solution, decreasing solubility.
C. High temperatures mean more kinetic energy, which keeps sodium and chlorine ions from combining, which increases solubility
D. High temperatures mean that sodium and chlorine ions will be moving faster, increasing the odds that they will colide and combine. This reduces solubility.

Answer 1

The best option that accurately describes how temperature changes lead to solubility changes for salt dissolved in water is:

D. High temperatures mean that sodium and chlorine ions will be moving faster, increasing the odds that they will collide and combine. This reduces solubility.

However, to clarify – while it's true that increased temperature leads to greater movement of ions, generally, for many salts (like sodium chloride), increased temperature increases solubility because it provides more energy to break ionic bonds and allows more ions to enter the solution. Therefore, it could be misleading to say that it "reduces solubility."

In summary, while D captures the idea of ion movement, it does not accurately represent the general effect of temperature on the solubility of most salts in water, which typically increases with temperature.