Answer to Question #310119 in General Chemistry for Ash

Question

question 1

I have a solution of 0.0670 mol of Cu(NO3)2 in 154 mL of water. I then dissolve 0.45 mol of potassium cyanide, KCN, in this solution, and it instantly turns from a pale blue colour to a pronounced dark blue, indicating the formation of the tetracyanocuprate (ll) ion, [Cu (CN)4]2- . The volume of the final solution is 155 mL. Please calculate the concentration of free (uncoordinated) Cu2+ in this solution. Show all your work, including the minor conversions and the ICE table. Write a balanced equation to begin.

Answer 1

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