a. Write half-equations for the three reactions taking place in the half-cells shown on the left in Figure 20.10.

b. What are the standard electrode potentials for these half-cell reactions?

c. List all the necessary conditions in each cell.

Transcribed Image Text:

Fe"/Fe half-cell 0.44V voltmeter iron rod - + H;(3) salt bridge - standard hydrogen electrode 298 K Fe2+ Cr*/Cr half-cell 0.91 V voltmeter chromium rod - H2(g) salt bridge - standard hydrogen electrode 298 K Ag*/Ag half-cell 0.80V voltmeter silver rod -H-(8) salt bridge - standard hydrogen electrode 298 K Ag Figure 20.10 Measuring standard electrode potentials.