I have this question to fill in:Ionic compound Substance at cathode Substance at anodeMolten lead iodide Iodine Lead?Potassium Chloride Chlorine Potassium?Calcium Chloride Chlorine Calcium?Aluminium Oxide Oxygen Aluminium?Copper Bromide Bromine CopperThe ones with the question marks i am not sure about, is it possible for those metals to form at the anode? I thought if potassium formed it would react badly in the liquid solution? What happens here?Thanks
1You have got your anode and cathode products the wrong way round2It's not clear whether you are talking about molten electrolytes or solutionsAluminium oxide doesn't dissolve, so that has to be moltenSo the cathode product would be aluminium, and the onode oxygen3Potassium (and calcium) are only a problem if the electrolytes are in solutionHydrogen is given off instead if they are.
