Summary

The important information from this chapter is summarized below.

Chemical Equations Summary

&Le Chatelier's principle states that if a stress is applied to an equilibrium, the system will adjust to minimize the effect of the stress.

&The following terms are defined:

Density is the measure of the mass per unit volume of a material (density = mass/volume).

Molarity is moles of solute per liter of solution. Molar solutions are symbolized by the capital letter M.

Normality, (N), is defined as the number of equivalents of solute dissolved in one liter of solution.

ppm expresses the concentration of a solution in units of one part of solute to one million parts solvent. One ppm equals one milligram of solute per liter of solution.

&To balance chemical equations, the number of elemental constituents must be the same on each side of the equation.