If you constructed a cell where one chamber contains 1.0 M CrCl 3 and the other
ID: 957345 • Letter: I
Question
If you constructed a cell where one chamber contains 1.0 M CrCl3 and the other chamber contains 0.001 M CrCl3 with the electrodes in each chamber Cr(s), answer the following:
A) in which chamber would reduction occur spontaneously?
B) what happens to the cell potential if 100 mL of pure water is added to the anode?
C) what happens to the cell potential if 100 mL of 1.0 M sodium hydroxide is added to the cathode chamber? Note chromium(III) hydroxide is insoluble. How could the solubility of Cr(OH)3 be determined using this cell?
D) what happens to the cell potential increasing the mass of the chromium electrode in the anode chamber?
E) If the cell potential with Cr(OH)3(s) present in the cathode chamber is 96.8 mV, what is the solubility of the insoluble salt?
Explanation / Answer
it is a concentration cell
A ) The chamber where concentration is higher ie 1.0 M CrCl3
B) Cell potential will increase
C) Cell potential will deccrease
D) no change