Chem Ch 12 & 13 Solutions & Solubility

A substance that ____ is soluble in the solvent.

• forms a gas

• forms a solid

• expoldes

• dissolves

The ratio "moles solute" /"kilograms of solvent" is used for what unit of concentration?

• parts per million

• molarity

• percent by mass

• molality

A solution is ____ if it contains more solute than it should be able to under the given conditions.

• supersaturated

• saturated

• unsaturated

• oversaturated

The ____ is the material that is dissolved when forming a homogenous mixture

• solution

• solvent

• solute

• reactant

How many moles of Ca(OH)₂ must be present in 2.0 L of solution to have a concentration of 0.50 M?

• 0.5 mol

• 2.0 mol

• 10 mol

• 1.0 mol

How can you tell the difference between a solution and a colloid?

• filtration

• settling

• Tyndall effect

• distillation

The solubility of which type of substance would show the greatest effect from changes in pressure?

• molecular solid

• gas

• liquid

• ionic solid

A student is dissolving sodium chloride in water. Which of the following will cause NaCl to dissolve more slowly?

• use small crystals

• heat it

• use large crystals

• stir it

You dissolve a solid in water and notice that the beaker becomes warm to the touch. The dissolving process was ____-thermic and ____ energy.

• exo-; released

• endo-; released

• exo-; absorbed

• endo-; absorbed

If 150 g of CaCO₃ (molar mass = 100.09 g/mol) is added to enough water to make 500 mL, what is the molarity of the solution?

• 0.003 M

• 0.3 M

• 300 M

• 3 M