MadSci Network: Chemistry

Re: Why MgCl2 is added to the water sample before titrating with EDTA?

Date: Wed Jul 27 21:51:14 2011
Posted By: Henry Boyter, Research Fellow
Area of science: Chemistry
ID: 1305881148.Ch

MgCl2 is not added in the standard test. There is a buffer solution that is added that contains MgCl2. It is to control the pH of the test. Since there is MgCl2 present, a blank is always run, however the amount of MgCl2 in the buffer is small and does not cause a problem with the test.

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