Unit 7 Review Flashcards

Flashcards covering key vocabulary and concepts from Unit 7.

Solution

A homogeneous mixture in which a solute breaks down in a solvent so that it is not visible (unless colored).

Solute

The substance that dissolves in a solvent to form a solution.

Solvent

The substance in which a solute dissolves.

Electrolyte

A substance that completely breaks down into ions that are attracted to water.

Nonelectrolyte

A substance that does not break down into ions.

Saturated solution

A solution in which no more solute will dissolve; it is at equilibrium between solute and solvent.

Unsaturated solution

A solution that can still dissolve more solute.

Like Dissolves Like Rule

Polar dissolves polar, nonpolar dissolves nonpolar.

Molarity

M = mol of solute / L of solution

Equilibrium

The concentration of reactants and products no longer change; the rate of change is equal; the reaction continues because it is reversible; there are no signs of change.

Equilibrium Expression (Keq)

Keq = [Products]/[Reactants]; Solids are not included

Keq > 1

Products favored; forward reaction favored.

Keq < 1

Reactants favored; reverse reaction favored.