Question 1
Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25 °C. (The equation is balanced.)
Mg(
s) + Cu
2+(
aq) → Cu(
s) + Mg
2+(
aq)
| Mg2+(aq) + 2 e⁻ → Mg(s) | E° = -2.38 V |
| Cu2+(aq) + 2 e⁻ → Cu(s) | E° = +0.34 V |
◦ -2.04 V
◦ +1.36 V
◦ +2.04 V
◦ +2.72 V
◦ -1.36 V
Question 2
Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25 °C. (The equation is balanced.)
2K(
s) + I
2(
s) → 2K⁺(
aq) + 2I⁻(
aq)
| K+(aq) + e⁻ → K (s) | E° = -2.93 V |
| I2(s) + 2 e⁻ → 2 I⁻(aq) | E° = +0.54 V |
◦ +1.85 V
◦ +5.32 V
◦ +3.47 V
◦ -5.32 V
◦ +6.40 V
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A generalized animal cell