Solubility Review

A combination of 2 or more substances that cannot be easily separated is called- 

• a mixture
• a solution 
• a solute 
• a solvent 

A combination of two or more substances that cannot easily be separated--

• mixture
• solution
• solute
• solvent

Which solute is the most soluble at 10 ⁰C?

• KI
• KClO₃
• NH₄Cl
• NH₃

Which solute is the least soluble at 90 ⁰C?

• SO₂
• KClO₃
• KI
• HCl

Which solute does not increase in solubility as temperature rises?

• NH₃
• NaNO₃
• KNO₃
• NaCl

What is the maximum temperature where at least 60 g of HCl can dissolve?

• 45 ⁰C
• 55 ⁰C
• 35 ⁰C
• 65 ⁰C

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 

Which of these compounds decreases in solubility as the temperature increases.

• Ce₂(SO₄)₃
• KClO₃
•  K₂Cr₂O₇
• KNO₃

When 50 grams of KCl is dissolved in 100 grams of water at 50 ºC, the solution can be correctly described as:

• supersaturated
• unsaturated
• saturated

If the amount of solute is less than the maximum that can dissolve, the solution is

• saturated

• unsaturated

• supersturated

• concentrated