The conductivities of a sulfuric acid solution and a barium hydroxide solution are tested, and will be the basis for monitoring a simple titration.
As a barium hydroxide solution is added to a sulfuric acid solution, the solution's conductivity gradually decreases. When the acid is consumed, the conductivity approaches zero, then rises again as more base is added.
The electrical conductivity apparatus circuit is completed by ethylene glycol, a liquid covalent compound.
The electrical conductivity apparatus circuit is completed by an aqueous solution of hydrochloric acid.