Question

Please answer ALL THREE PARTS of the question with correct answers and explanations. Thanks.

Electrochemical Measurement of Concentration An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. What is the potential of this cell at 25°C if the copper electrode is placed in a solution in which [Cu2+] = 1.9x10-9 M? 1pts Submit Answer Tries 0/5 The copper electrode of the above cell is placed in a solution of unknown [Cu2+]. The measured potential at 25°C is 0.160 V. What is [Cu2+] (in mol/L)? (Assume Cu2+ is reduced.) 1pts Submit Answer Tries 0/5 A calibration curve to show how the cell potential varies with [Cu2+] may be constructed. A plot of cell potential (in V, with the same sense as in question 1) versus log10[Cu2+] should yield a straight line. What is the slope of this line? 1pts Submit Answer Tries 0/5

Answer 1

D log reu] cut2tze ž cw, [ [aujal I cut?] E90.34- Oostende sy tworzy Er 034 - .oş? long co 9x1604), Ez 0:34 - 0.089 in (1.9x10 E = 0.34 + 0.OST log (1-9x164) E = 0,34 + 0.059 ly 1-9 + 0.054 ly 167 10.34) + event or of 0.059 x 0.301 + oors X-9 E2 0108337 Ea 0.16o, reute] =? СеU) €26° vi ose log Teuta] 0.160 = 0.34 – 0.03W log ieute] 0.160 - 01342 -0.059 ey (CUF] -0.18 = -0.osa y reuts! 20.18 = + 0.09g By [cutaj -o-a my routine 17-948167 cm) - Plot: logt exs eog reutz] 38afae: +6.05 [E3E-6 sy ly routing ] reuta] =16*