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Redox reactions

  • #1
Hi all,

The other day in chemistry class, we carried out several different redox reactions. In one set of the experiments, we reacted potassium permanganate with 3 different potassium halides (KCl, KBr, KI). this particular redox reaction also requires an acidic environment, so sulfuric acid was added.

Some of my friends believe that they saw KBr and KI react with potassium permanganate, but not KCl. I'm looking over the equations for each of the reaction and I can't figure out why KBr and KI would react but not KCl (furthermore, I can't even be sure that KBr and KI reacted at all.)

Does anyone have any ideas?

[ The ON for Mn is 7+ in potassium permanganate. This is the maximum ON for Mn. So naturally, I thought that all reactions would proceed, as bromide, chloride and iodide ions are not at their maximum ON ]
 
Last edited:

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