1
$\begingroup$

I've been studying about the selective ion electrodes and I came across a question which I seem to not be able to answer. It has to do with why the detection limit for iodide ions is lower than the one for chloride ions.

I know that the detection limit depends on the type of the electrode, temperature, pH, the interfering ions etc., but how can I understand the difference between the detection limit of I- and Cl- ions?

$\endgroup$
  • $\begingroup$ I'd suggest that the difference is indicated by difference in solubility products for the silver salts. The $K_{sp}$ for silver chloride is $1.77\times10^{−10}$, but for silver iodide the $K_{sp}$ is $8.52 \times10^{ −17}$. $\endgroup$ – MaxW Sep 9 '18 at 17:53

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Browse other questions tagged or ask your own question.