On Thu, 20 Apr 1995 7039ckrah@umbsky.cc.umb.edu wrote: > In response to Alistair's question on the EDTA use in batteries, my GUESS > is that the EDTA functions as a chelator for all divalent ions. EDTA has > been used to reduce the activities of metals in solution (Activity refers > to the free ion concentration) In lead acid batteries, the lead exists as > Pb+2 when it is in solution. Maybe adding EDTA complexes the Pb+2 such that > it doesn't react and form the slightly insoluble sulfate salts > > > it doesn't react and form the slightly soluble sulfate salts whixh can then > accumulate and short out the battery..... > christian > Actually (again, please bare with me, I'm _not_ a chemist at home or at work), the sulfate covers the plates in a crytalline form, preventing the lead from reacting _well enough_ with the electrolyte. Jack
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