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March 30, 2015

Homework Help: Analytical chemistry

Posted by Anonymous on Wednesday, February 6, 2013 at 10:09am.

A 0.6334 gram of sample of impure mercury (II) oxide was dissolved in an unmeasured excess of potassium iodide.

Reaction: HgO + 4I- + H2O ------→HgI42- + 2OH-

Calculate the % HgO in the sample if titration of the liberated hydroxide required 42.59 ml of 0.1178 M HCl.

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