The purpose of this lab is to determine the concentration of a sodium hydroxide solution by titrating it with a standard solution of known concentration.

Background:

Chemicals react in stoichiometric ratios based on balanced chemical reactions. Thus, allowing a person to predict the amount of one reactant when the other is known.  The amount of one reactant is determined by the relationship between relationship between concentrations, in the equation:

                c=n/V

 c= concentration of the substance (mol/L)

 V =volume of the solution (L)

 n= amount of substance (mol)

A technique known as a titrations used to determine the quantity of one reactant when another is known.  The equivalence point is the point during the titration when one reactant is completely used up.  At the equivalence point, the experimenter will known the volume and molarity, and therefore the concentration can be found.