Solutions

What is the molarity of a 0.5L sample of a solution that contains 80.0 g of sodium hydroxide (NaOH)

• 4.0M

• 1.5M

• 3.0M

• 6.0M

A student is preparing solutions for a laboratory experiment by dissolving solid solutes in liquid solvents. Which action will increase the rate of solubility

• lowering the temperature of the solvent

• stirring the solute in the solution

• increasing the pressure on the solution

• increasing the particle size of the solute

Which of the following types of solutions has more room to dissolve solute?

• supersaturated

• saturated

• unsaturated

The concentration of a mixture can be increased in which of the following ways?

• Heating the mixture
• Adding more water “solvent”
• Adding more powder “solute”
• Stirring the mixture

Which of the following will produce crystals if cooled or disturbed?

• unsaturated solution

• saturated solution

• supersaturated solution

• all of the above

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO₃ to a volume of 250.0 mL?

• 15.9 M

• 0.636 M

• 0.642 M

• 1.59 M

What volume of 1.50 M KBr can be made from 15.6 mL of concentrated KBr with a molarity of 9.65 M?

• 150. mL
• 151 mL
• 1.00 L
• 100. mL

If I dilute 250 mL of 0.10 M lithium acetate solution to a volume of 750 mL, what will the concentration of this solution be?

• 2 M

• 0.02 M

• 0.033 M

• 0.08 M

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