Topic 10 Solubility/Molarity Practice Quiz

What does it mean to dilute a solution?

• lower the concentration of solute per solvent
• increase the concentration of solute per solvent

Which substance is least soluble at 0 ºC?

• KI

• KNO₃

• KClO3

• Ce₂(SO₄)₃

How many grams are soluble in 100 g of water at 100 ºC?

• 300 grams

• 250 grams

• 100 grams

• 50 grams

When 40 grams of NaCl is dissolved in 100 grams of water at 90 ºC, the solution can be correctly described as:

• supersaturated

• saturated

• unsaturated

Which solute does not increase in solubility as temperature rises?

• NH₃
• NaNO₃
• KNO₃
• NaCl

You can make a solution more concentrated by adding __________.

• solute
• solvent
• water

Solution where more solute can still be dissolved at the given temperature. 

• Saturated
• Unsaturated
• Supersaturated
• Homogeneous solution

A solution of potassium chlorate, KClO₃, has 20 grams of the salt dissolved in 100 grams of water at 70 ºC. Approximately how many more grams of the salt can be added to the solution before reaching the saturation point?

• 10 grams
• 30 grams
• 80 grams
• 60 grams 

Identify how many grams of KNO3 is required to make a saturated solution at 40'C.

• 50 g

• 45 g

• 55 g

• 33 g

If I dissolve sugar in water, what is the solute?

• Water
• Hydrogen
• Sugar
• Carbon