Question

solubility curve
part a
which two substance have the solubility of 115g at the same
temperature?
licl
rbcl
nac₂h₃o₂
nano₃
part b
at what temperature do nano₃ and nac₂h₃o₂ have the same
solubility?
55 c
70 c
100 c
25 c
part c
which substance is the most soluhle at 70 c?

Explanation:

Part A

By looking at the solubility curve, we find the points where the solubility is 115g. We check each option:

• For \(LiCl\), we trace its curve and see if it reaches 115g at a certain temperature.
• For \(RbCl\) (assuming it's a mis - label and maybe a typo, but if we consider the given options), we check.
• For \(NaC_{2}H_{3}O_{2}\), we check its curve.
• For \(NaNO_{3}\), we check its curve.

We find that \(LiCl\) and \(NaNO_{3}\) have a solubility of 115g at the same temperature.

To find the temperature where \(NaNO_{3}\) and \(NaC_{2}H_{3}O_{2}\) have the same solubility, we look for the intersection point of their curves on the solubility - temperature graph.

Answer:

A. \(LiCl\), D. \(NaNO_{3}\)

Part B