Ch. 19 Electrochemistry 1) Consider the following cells... a) Cr(s) | Cr" (aq) || Ni¹" (aq) | Ni(s) c) Sn(s) | Sn³ (aq) || Cr" (aq) | Cr(s) For each cell: - identify the anode and cathode: - draw each half-cell and label the electrodes and electrode solutions based on the cell notation; - write the half-reactions for the anode and cathode; - write the overall balanced equation for the cell; - calculate the cell potential using the reduction potentials shown below: - predict the spontaneity of the overall reaction based on the cell potential Cell potentials... Cr" (aq) + 3e Cr(s) Ni² (aq) + 2e → Ni(s) Sn² (aq) + 2e Sn(s) - Comparing the reduction potentials of chromium and nickel which is the better reducing agent? - Between nickel and tin, which is the better oxidizing agent? -0.74 V -0.25 V -0.14 V

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Ch. 19 Electrochemistry
1) Consider the following cells...
a) Cr(s) | Cr" (aq) || Ni² (aq) | Ni(s)
c) Sn(s) | Sn³ (aq) || Cr" (aq) | Cr(s)
For each cell:
- identify the anode and cathode;
- draw each half-cell and label the electrodes and electrode solutions based on the cell notation;
- write the half-reactions for the anode and cathode;
- write the overall balanced equation for the cell;
- calculate the cell potential using the reduction potentials shown below;
- predict the spontaneity of the overall reaction based on the cell potential
Cell potentials...
Cr" (aq) + 3e
Ni (aq) + 2e
Sn² (aq) + 2e
- Comparing the reduction potentials of chromium and nickel which is the better reducing agent?
- Between nickel and tin, which is the better oxidizing agent?
Cr(s)
Ni(s)
Sn(s)
-0.74 V
-0.25 V
-0.14 V
Transcribed Image Text:Ch. 19 Electrochemistry 1) Consider the following cells... a) Cr(s) | Cr" (aq) || Ni² (aq) | Ni(s) c) Sn(s) | Sn³ (aq) || Cr" (aq) | Cr(s) For each cell: - identify the anode and cathode; - draw each half-cell and label the electrodes and electrode solutions based on the cell notation; - write the half-reactions for the anode and cathode; - write the overall balanced equation for the cell; - calculate the cell potential using the reduction potentials shown below; - predict the spontaneity of the overall reaction based on the cell potential Cell potentials... Cr" (aq) + 3e Ni (aq) + 2e Sn² (aq) + 2e - Comparing the reduction potentials of chromium and nickel which is the better reducing agent? - Between nickel and tin, which is the better oxidizing agent? Cr(s) Ni(s) Sn(s) -0.74 V -0.25 V -0.14 V
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