Pb(s)| Pb 2+ (1M) || Ag + (1M) | Ag(s) Determine which of the following statemen

Question

Pb(s)| Pb2+ (1M) || Ag+ (1M) | Ag(s)

Determine which of the following statements about the cell shown are True or False.

True False  The standard cell potential, o, equals 0.67 V.
True False  The lead electrode is the cathode.
True False  The lead half-cell is the anode.
True False  Cations move to the lead half-cell.
True False  As the reaction proceeds, the concentration of the silver ions decreases.
True False  The cell, as represented by the line notation, is a galvanic cell.
True False  The mass of the lead electrode is decreasing.
True False  Electrons are spontaneously produced in the lead half-cell.

Decide which reaction is the oxidation half-reaction and which is the reduction reaction. Then look at the reactants and products of these two reactions. Products will be produces and reactants consumed during the reaction. Oxidation occurs at the anode and eduction occurs at the cathode. Oxidation reactions produce electrons. Reduction reactions consume electrons. Pb(s) salt bridge Ag(s) 1 +2 Ag NO3 Pb -2 SO4 Pb+2 + 2e. Pb(s) +le. E° =-0.13V

Explanation / Answer

E0cell = Ecathode - Eanode

       = 0.8 - (-0.13)

   = 0.93 v

1. The standard cell potential, o, equals 0.67 V.   = false

2. The lead electrode is the cathode = false

3. The lead half-cell is the anode = true   ( lower reduction potential acts as anode)

4. Cations move to the lead half-cell = false (on oxidation pb2+ is generated.so that anion move to lead half-cell)

5. As the reaction proceeds, the concentration of the silver ions decreases.   = true

6. The cell, as represented by the line notation, is a galvanic cell. = true

7. The mass of the lead electrode is decreasing = true

8. Electrons are spontaneously produced in the lead half-cell = true.

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