The solubility product, Ksp, of a sparingly soluble salt can be determined by measuring the cell potential of a cell known as a concentration cell. One of the half-cells uses a saturated solution of the salt as the electrolyte. The Ksp of silver chloride, AgCl, can be measured using the apparatus shown. [Figure X.X] The silver electrodes of the two half-cells were connected via a voltmeter, reading to three decimal places. This measured the cell potential of the concentration cell. The half-cells were kept at a temperature of 40 °C. Under these conditions, the relationship between cell potential, Ecell, and [Ag⁺(aq)] is 16.1Ecell = log Csat - log [Ag⁺(aq)] Csat is the concentration of the saturated solution of silver chloride