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Author Topic: 2 a.chem questions  (Read 2929 times)

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2 a.chem questions
« on: March 25, 2018, 06:44:58 PM »

I am having trouble writing the reduction of Cu2+ by NH2OH in acid solution.
This is what I have right now now:
4Cu^2+ +2NH_2OH --> 4Cu^1+ + N_2O + H_2O + 4H^+

My other question is regarding this: "At a pH of 4, the Cu-neocuproine complex formed in the liquid-liquid extraction experiment has a partition coefficient of about 6.4 when equilibrated between the acid aqueous solution and chloroform. Calculate the concentration of Cu in the chloroform phase if 39.0 mL of a 0.27 M aqueous Cu solution buffered to pH 4 is equilibrated with 14.0 mL of chloroform."
Im not sure where to start, and how to use the pH in this relation.


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Re: 2 a.chem questions
« Reply #1 on: March 26, 2018, 04:17:01 AM »

Assuming N2O is a correct product reaction is balanced correctly.

Im not sure where to start, and how to use the pH in this relation.

What about neocuproine protonation?
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation,,, PZWT_s1

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