Question

solubility curve
part a
at what temperature do kcl and kno₃ have the same solubility?
a 30 c
b 82 c
c 3 c
d 24 c
part b
how does the solubility of kcl change as the temperature rises?
a it decreases
b cannot tell from th graph
c it stays the same
d it increases
part c
which substance on the graph has the lowest solubility at 60c?
a kclo₃

Explanation:

Part A

• Step1: Analyze the solubility curves
• Look for the point of intersection of the \(KCl\) and \(KNO_3\) solubility curves.
• From the graph, the intersection occurs at approximately \(24^{\circ}C\).

Part B

• Step1: Observe the trend of \(KCl\) solubility curve
• As the temperature (x - axis) increases, the solubility (y - axis) of \(KCl\) (its curve) moves upwards.

Answer:

• Part A: D. \(24^{\circ}C\)
• Part B: D. It increases