Lesson 5: Concentration

Concentration

The quantity of dissolved solute per unit volume of solution.

Amount Concentration

The amount (in moles) of solute dissolved per liter of solution. Symbol: M (mol/L)

Stock Solution

A concentrated solution used to prepare dilute solutions for actual use.

Standard Solution

A solution for which the precise concentration is known.

Volumetric Flask

A pear-shaped container with an elongated neck used to prepare standard solutions.

Meniscus

The curved upper surface of a liquid in a container.

Dilution

The process of adding additional solvent to a solution to decrease its concentration.

Molarity

The amount of solute in moles per liter of solution. Symbol: M (mol/L)

Solution

A homogeneous mixture of two or more substances.

Precise Concentration

The exact concentration of a standard solution that is known.