Consider the salt bridge for a \(\mathrm{Ag} / \mathrm{AgCl}\) reference electrode with a \(1.0 \mathrm{M} \mathrm{KCl}\) internal solution dipping into sample solution with a \(1.0 \mathrm{M} \mathrm{NaCl}\) supporting electrolyte solution. Explain the effect of the \(\mathrm{Na}^{+}\)ion, \(\mathrm{K}^{+}\)ion, and \(\mathrm{Cl}^{-}\)ion on the junction potential.