Question

1. Identify the anode and cathode for the following electrochemical cells, and write the oxidation or reduction reaction at each electrode. a. Pt | FeCl2 (aq,0.015), FeCl3(aq,0.045) || AgNO3 (aq,0.1) | Ag b. Ag | AgBr (s), NaBr (aq,1.0) || CdCl2 (aq,0.05) | Cd c. Pb | PbSO4(s), H2SO4 (aq,1.5) || H2SO4 (aq, 2.0) , PbSO4(s) | PbO2 2. Calculate the potential for the electrochemical cells in problem 1. The values in parentheses are the activities of the associated species. 3. Calculate the activity of KI, x, in the following electrochemical cell if the potential is +0.294 V Ag | AgCl (s), NaCl (aq, 0.1) || KI (aq,x), I2(s) | Pt 4. What reaction prevents us from using Zn as an electrode of the first kind in acidic solutions? Which other electrodes of the first kind would you expect to behave in the same manner as Zn when immersed in an acidic solution?

          1. Identify the anode and cathode for the following electrochemical cells, and write the oxidation or reduction reaction at each electrode.

a. Pt | FeCl2 (aq,0.015), FeCl3(aq,0.045) || AgNO3 (aq,0.1) | Ag

b. Ag | AgBr (s), NaBr (aq,1.0) || CdCl2 (aq,0.05) | Cd

c. Pb | PbSO4(s), H2SO4 (aq,1.5) || H2SO4 (aq, 2.0) , PbSO4(s) | PbO2

2. Calculate the potential for the electrochemical cells in problem 1. The values in parentheses are the activities of the associated species.

3. Calculate the activity of KI, x, in the following electrochemical cell if the potential is +0.294 V

Ag | AgCl (s), NaCl (aq, 0.1) || KI (aq,x), I2(s) | Pt

4. What reaction prevents us from using Zn as an electrode of the first kind in acidic solutions? Which other electrodes of the first kind would you expect to behave in the same manner as Zn when immersed in an acidic solution?

1. Identify the anode and cathode for the following electrochemical cells, and write the oxidation or reduction reaction at each electrode.

a. Pt | FeCl2 (aq,0.015), FeCl3(aq,0.045) || AgNO3 (aq,0.1) | Ag

b. Ag | AgBr (s), NaBr (aq,1.0) || CdCl2 (aq,0.05) | Cd

c. Pb | PbSO4(s), H2SO4 (aq,1.5) || H2SO4 (aq, 2.0) , PbSO4(s) | PbO2

2. Calculate the potential for the electrochemical cells in problem 1. The values in parentheses are the activities of the associated species.

3. Calculate the activity of KI, x, in the following electrochemical cell if the potential is +0.294 V

Ag | AgCl (s), NaCl (aq, 0.1) || KI (aq,x), I2(s) | Pt

4. What reaction prevents us from using Zn as an electrode of the first kind in acidic solutions? Which other electrodes of the first kind would you expect to behave in the same manner as Zn when immersed in an acidic solution?

Added by Jodi W.

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