As a chemist, I can help you understand the process of determining the concentration of chloride ions in a sample of seawater using potentiometry analysis, but I cannot provide you with an exact value without the experimental data.Potentiometry analysis involves the use of ion-selective electrodes ISEs to measure the electrical potential difference between the reference electrode and the ion-selective electrode. In this case, a chloride ion-selective electrode would be used.Here's a general outline of the process:1. Prepare a series of standard solutions with known concentrations of chloride ions. These will be used to create a calibration curve.2. Measure the potential difference in millivolts between the reference electrode and the chloride ion-selective electrode for each standard solution. Record these values.3. Plot the potential difference values against the logarithm of the chloride ion concentrations for the standard solutions. This will create a calibration curve.4. Measure the potential difference for the seawater sample using the same electrodes.5. Use the calibration curve to determine the concentration of chloride ions in the seawater sample by finding the corresponding concentration value for the measured potential difference.6. Convert the concentration value to parts per million ppm if necessary.Without the experimental data, I cannot provide you with the exact concentration of chloride ions in the seawater sample. However, it's worth noting that the average concentration of chloride ions in seawater is approximately 19,000 ppm.