Which salt is more soluble sodium nitrate or potassium nitrate

Asked by admin @ 16/11/2021 in Chemistry viewed by 322 People

Comparing potassium nitrate (KNO3) and sodium chloride (NaCl), which chemical's solubility (in water) is most affected by change in temperature?

A. potassium nitrate
B. sodium chloride
C. same variation
D. impossible to tell

Answered by admin @ 16/11/2021

Answer:

A. potassium nitrate

Explanation:

A change in temperature generally increases the solubility of solutes in solutions.

To solve this typical problem, its best to use the solubility curve which shows the solubility of different compounds in water.

Find the curve attached below;

We can see that with increasing temperature, the solubility of potassium nitrate increases the most with increasing temperature.

The solubility of sodium chloride rarely changes with an increase in temperature.

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