A 1.00 L solution contains 2.00 X 10^-4 M Cu(No3)2 and 1.2 x 10^-3 M Ethylenediamine...

A 1.00 L solution contains 2.00 X 10^-4 M Cu(No3)2 and 1.2 x 10^-3 M Ethylenediamine (en). The Kf for Cu(en)2 2+ is 1.0X10^20 What is the concentration of Cu 2+ (aq) in the solution?

Solutions

Expert Solution

The concentration of Cu²⁺_(aq) in the solution is:

$Cu(NO_{3})_{2}_{(aq)}\: \rightarrow \: Cu^{2+}_{(aq)}\: +\: 2NO_{3}^{-}_{(aq)}$

You can resolve your exercise, considering the stoichiometric ratios

analyzing the exercise in this way, there is not Cu²⁺_(aq) in solution, because all Cu is forming the complex with the ethylenediamine.

I hope this answer your help.
If that is not so, my apologies, the exercise is not clear to solve.

queen_honey_blossom answered 1 year ago

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