Solutions Overview

What is true about a solution?

• Solutions are not mixtures.
• Solutions are mixtures.
• All mixtures are solutions.

Why will sugar dissolve in water?

• sugar is an ionic substance

• sugar is a polar covalent substance

• sugar will not dissolve in water

• sugar has similar energy to water

Which of the following is soluble in water?

• AgNO₃

• Ca₃(PO₄)₂

• Mg(OH)₂

• PbCl₂

What type of solution establishes an equilibrium between dissolving and crystallizing?

• unsaturated

• saturated

• supersaturated

What type of solution contains more dissolved solute than it can hold at a given temperature?

• unsaturated

• saturated

• supersaturated

How many grams of KCl can be dissolved in 100g of water at a temperature of 80.0^oC?

• 40g

• 50g

• 65g

• 100g

If you dilute 20.0 ml of a 3.5M solution to make 100.0 ml of solution, what is the molarity of the dilute solution?

• 0.18M

• 0.70M

• 1.4M

• 18M

How many moles of solute are present in 3.5L of a 3.0M solution of CuCl₂?

• 10.5g

• 10.5 mol

• 10.5M

When a compound held together by ionic bonds dissolves, the compound

• releases molecules into the solution

• forms a suspension

• releases ions into the solution

• becomes nonpolar

How does an increase in temperature affect the solubility of gases?

• It increases the solubility of the gas.

• It decreases the solubility of the gas.

• It has no effect on the solubility of the gas.