Answer to Question #86031 in General Chemistry for thomas

Question

Potassium dichromate in acidic solution is used to titrate a solution of copper(I) ions, with which it reacts according to
Cr2O72-(aq) + 6Cu+(aq)+14H3O+(aq)2Cr3+(aq) + 6Cu2+(aq)+21H2O(l)

A potassium dichromate solution is prepared by dissolving 32.18 g of K2Cr2O7 in water and diluting to a total volume of 1.000 L. A total of 19.93 mL of this solution is required to reach the endpoint in a titration of a 250.0-mL sample containing Cu+(aq). Determine the concentration of Cu+ in the original solution.

________ M

Answer 1

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