Clarissa Pullin

Which of the following does not increase the rate of dissolving a solid in a liquid?

• stirring the solution
• crushing up the solute
• raising the temperature of the water
• lowering the temperature of the water

Calculate the molarity of a solution prepared by dissolving 78.2 grams of CaCl₂ in 500.0mls of water

• 0.156 M
• 0.709 M
• 0.353 M
• 1.41 M

How many grams of ammonium chloride are needed to make a saturated solution at 80^o C?

• 50 grams
• 80 grams
• 65 grams
• 75 grams

At 40^oC which salt is least soluble?

• KClO₃
• NaCl
• KI
• KNO₃

Which will dissolve the slowest

• powdered sugar in hot water
• Powdered sugar in cold water
• sugar cubes in hot water
• sugar cubes in cold water

What kind of solution is made from 50 grams of KNO₃ at 40^oC?

• saturated
• unsaturated
• supersaturated

Which of the following solutions made from one mole of the following solutes in 100.0 mls of water has the lowest freezing point?

• MgBr₂
• Al₂(CO₃)₃
• NH₄C₂H₃O₂
• N₂O₄

Which of the following has components in a uniform arrangement?

• Heterogeneous mixture
• Colloids
• Suspensions
• Solutions

What is the molarity of  420 mls of a KCl solution that contains 16.0 grams of KCl

• 625 M
• 0.51 M
• 3.19 M
• 0.00563 M

If the amount of solute present in a solution is more than the maximum than can be dissolved, the solution is

• saturated
• unsaturated
• supersaturated
• colloidal