the specific conductance of a sample of water is 4.3*10^-5sm^-1 when saturated with AgCl(at same temp.) the specific conductance becomes 1.55 *10^4 sm^-1. if in a field of 1V-cm^-1,the absolute velocities of AG+ and Cl- ions at infinite dilution are resp. 5.6*10^-4 and 6.8*10^-4 cm/s .what is the solubility product of AgCl?

Dear student,

Conductivity is the ability of a material to conduct electric current. The principle by which instruments measure conductivity is simple - two plates are placed in the sample, a potential is applied across the plates (normally a sine wave voltage), and the current is measured. Conductivity (G), the inverse of resistivity (R) is determined from the voltage and current values according to Ohm's law. 

G = I/R = I (amps) / E (volts)

Since the charge on ions in solution facilities the conductance of electrical current, the conductivity of a solution is proportional to its ion concentration. In some situations, however, conductivity may not correlate directly to concentration. The graphs below illustrate the relationship between conductivity and ion concentration for two common solutions. Notice that the graph is linear for sodium chloride solution, but not for highly concentrated sulfuric acid. Ionic interactions can alter the linear relationship between conductivity and concentration in some highly concentrated solutions.