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Author Question: What is the approximate concentration of free Cu2+(aq) remaining at equilibrium in a solution ... (Read 22 times)

RYAN BANYAN

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on: Jul 8, 2021

Question 1

Using the stepwise formation constants given, calculate the net formation constant for the [Cu(H2NCH2CH2NH2)2]2+ complex.

Cu2+ + en→ [Cu(en)]2+K1 = 5.2 × 1010
 [Cu(en)]2+ + en → [Cu(en)2]2+K2 = 2.0 × 109

◦ 2.6 × 101
◦ 2.5 × 109
◦ 5.4 × 1010
◦ 7.9 × 1019
◦ 1.0 × 1020

Question 2

What is the approximate concentration of free Cu2+(aq) remaining at equilibrium in a solution prepared by mixing 5.0 mL of 0.10 M CuCl2(aq) with 5.0 mL of 2.0 M aqueous ethylenediamine? [The net formation constant for the bis(ethylenediaminecopper(II) ion is 1 × 1020.]
◦ 9 × 10-22 M
◦ 7 × 10-22 M
◦ 2 × 10-22 M
◦ 1 × 10-21 M
◦ 6 × 10-22 M
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by RYAN BANYAN on Jul 8, 2021

ergserg

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Reply #1 on: Jul 8, 2021
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RYAN BANYAN

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Reply 2 on: Jul 8, 2021
Wow, this really help

duy1981999

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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