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Complexometric titration

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Complexometric titration

Post  Ironhand on Wed Nov 20, 2013 11:43 pm

A 25.00 mL aliquot of a solution containing Hg2+ in dilute nitric acid was treated
with 10.00 mL of 0.04882 MEDTA and the pH was adjusted to 10.0 with an
ammonia buffer. Two drops of a freshly prepared EBT indicator solution were
added and the excess EDTA back titrated with 0.01137 M Mg2+, requiring
24.66 mL to reach the endpoint. What is the molarity of Hg2+ in the sample?

Please help me. Thank you


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