Day 8 Solutions

Multiple Select

Which substances show an increase in solubility as temperature increases?

• CuSO4

• NH3

• NH4Cl

Multiple Choice

Which substance shows a decrease in solubility as temperature increases?

• CuSO4

• NH3

• NH4Cl

Multiple Choice

Which substance is most likely to be a gas? How do you know?

• CuSO4

• NH3

• NH4Cl

Multiple Choice

How much copper (II) sulfate would be dissolved in a saturated solution at 30 C?

• 25 g

• 43 g

• 40 g

Multiple Choice

Refer to your graph, at what temperature do NH3 and NH4Cl have the same saturation point?

• 48 C

• 32 C

• 100 C

Open Ended

Refer to your graph, at what temperature do NH3 and NH4Cl have the same saturation point?Coca-Cola and Pepsi suggest that their products taste best when chilled to around 40 °F. Why might this be?

Open Ended

Some fish die-offs occur naturally during the summer months as water temperatures increase. Why might this be?