Question

1. look at the graph. which solid is less soluble at higher temperatures than at lower temperatures? a. sodium chloride b. sodium nitrate c. potassium bromide d. cerium sulfate 22. look at the graph. which compounds solubility is least affected by temperature changes? a. sodium chloride b. sodium nitrate c. potassium bromide d. cerium sulfate

Explanation:

Step1: Analyze solubility - temperature trend for 21

Check each option's solubility change with temperature on the graph. For cerium sulfate, as temperature increases, solubility decreases.

Step2: Analyze solubility - temperature trend for 22

Examine the slopes of the solubility - temperature curves for each option. Sodium chloride has the least - steep curve, meaning its solubility changes the least with temperature.

Answer:

1. d. cerium sulfate
2. a. sodium chloride