2
$\begingroup$

I know that salts act as an electrolyte in a redox process and rusting of iron, where iron loses electrons and oxidizes, and oxygen gains electrons and reduces. I did an experiment with KCl, NaCl, MgCl2 and CaCl2 salts dissolved in water, then dipped iron nails in the separate solutions to see which nail would rust more over a period of time. My result was MgCl2>CaCl2>KCl>NaCl. For my analysis I'm looking for an explanation as to why MgCl2 solution had the most rust, the CaCl2 the second most ect. I wondered about periodic trends and how I could look at electron affinity to see which salt could accept electrons the easiest, but I'm not sure if it's right. I just want help on this chemical process and an in depth explanation for my results. Thanks!

$\endgroup$
2
  • 3
    $\begingroup$ It would be nice to know how you pre-treated surface of the nails, what steel they are made of, what temperature and concentrations of the salts were used, and how you estimated rusting quantitatively. $\endgroup$ – andselisk Mar 1 at 9:05
  • 3
    $\begingroup$ I guess it all boils down to "how much chloride". $\endgroup$ – Ivan Neretin Mar 1 at 9:06

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.