Question

Which of these salts is most soluble at 50°C? KNO3 NaNO3 KClO3 NaCl

Answer 1

NaNO₃.

Step-by-step explanation:

• From the attached figure, the solubility of the different salts is:

• KNO₃:

It is 90 g per 100 g water.

• NaNO₃:

It is 110 g per 100 g water.

• KClO₃:

It is about 20 g per 100 g water.

• NaCl:

It is about 40 g per 100 g water.

So, the most soluble salt at 50°C is NaNO₃.