Abstract

      The purpose of this lab is to use conductometry to obtain the concentration of a Ba(OH)2 solution. This will be done by determining the equivalence point with a conductometric method. The conductometric method uses the fact that solutions conduct electricity when ions are present. A solution generally has a higher conductivity when a it has a higher ion concentration. The equivalence point is reached when the two electrolytes, Ba(OH)2 and H2SO4 are combined in a stoichiometric  ratio.  That is when all of the ions are removed and the conductivity is at its minimum. Ba(OH)2 solution will be titrated with H2SO4 solution. The reaction is: . When the equivalence both is reached the ions Ba2+, OH-, H3O+, and (SO4)2- will not be present. Once the equivalence point is determined, then the concentration of the Ba(OH)2 solution can be found.