When the Cu2+ concentration is 2.54×10-4 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 0.968V. What is the Cr3+ concentration? 3Cu2+(aq) + 2Cr(s)3Cu(s) + 2Cr3+(aq)

Answer: M

When the Hg²⁺ concentration is 1.49 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 1.723V. What is the Zn²⁺ concentration?

Hg²⁺(aq) + Zn(s) Hg(l) + Zn²⁺(aq)

Answer:  M

When the Ag⁺ concentration is 1.47 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 3.290V. What is the Mg²⁺ concentration?

2Ag⁺(aq) + Mg(s)2Ag(s) + Mg²⁺(aq)

Answer rating: 100% (QA)

Answer a The Cr 3 concentration is 0023 x 10 5 M b The Zn 2 concentration is 664 x 10 12 M c The Mg 2 concentration is 1924 x 10 5 M Explanation a The balanced reaction is 3Cu 2 aq 2Crs 3Cus 2Cr 3 aq ... View the full answer