theell whose fouation the cative, and give the experimental and calculated volta
ID: 706193 • Letter: T
Question
theell whose fouation the cative, and give the experimental and calculated voltages in each case. enter the standard electrode potential for each half cell reaction that you studied in as obtained from Table 10 in the Appendix. In the space below, calculate n ose voltage you measured in part 1. Write the calculated values in the table below. Also efor each cell reaction measured in part 1. Indicate which element is the positive electrode he for each c and which the n Redox couples Couple E, volts Fe Fe 0.3? Fe /Fe2 ? ,0652. Brz Positlveelectrode electrode Negative Experimental Calculated voltage Cell reaction co .93 v cofre Zinc 4 Fe 525?Explanation / Answer
Cell reactions and calculated cell potentials
I2 + 2Fe --> 2I- + 2Fe2+ Eo = 0.53 - (-0.44) = 0.97 V
Br2 + 2Fe2+ --> 2Br- + 2Fe3+ Eo = 1.0652 - 0.771 = 0.29 V
Cu2+ + Zn --> Cu + Zn2+ Eo = 0.337 - (-0.763) = 1.10 V
Br2 + 2I- --> 2Br- + I2 Eo = 1.0652 - 0.53 = 0.535 V
I2 + Cu --> 2I- + Cu2+ Eo = 0.53 - 0.34 = 0.19 V
2Fe3+ + 2I- --> 2Fe2+ + I2 Eo = 0.77 - 0.54 = 0.23 V
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