oncentrations: [Ni²+] = 0.80M and [Co²+] = 0.20 M at 298.15 K. half-reaction Eº (V) Ni2+ (aq) +2e→Ni(s) -0.25 Co²+ (aq) +2e→Co(s) -0.28 Write the balanced overall reaction that powers the cell. EVE [Co(s) + Ni ²+ (aq) →) Co²+ (aq) + Ni (s) Calculate Ecell for the redox reaction. (round to 2 decimal places) What is [Ni2+] when Ecell when reaches 0.03V? (round to 2 sig figs) V

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**Galvanic Cell Problem Set**

**Problem Description:**
A galvanic cell consists of a Ni/Ni²⁺ half-cell and a Co/Co²⁺ half-cell with initial concentrations: \([Ni^{2+}] = 0.80 \, M\) and \([Co^{2+}] = 0.20 \, M\) at 298.15 K.

**Half-reactions and Standard Electrode Potentials:**

| **Half-Reaction**                    | **E° (V)** |
|--------------------------------------|------------|
| \( Ni^{2+}(aq) + 2e^- \rightarrow Ni(s) \) | -0.25      |
| \( Co^{2+}(aq) + 2e^- \rightarrow Co(s) \) | -0.28      |

**Question 1: Write the balanced overall reaction that powers the cell.**

*Provided answer:* 
\[ Co(s) + Ni^{2+}(aq) \rightarrow Co^{2+}(aq) + Ni(s) \]

**Question 2: Calculate \( E_{cell} \) for the redox reaction. (Round to 2 decimal places)**

**Question 3: What is \(\left[ Ni^{2+} \right]\) when \( E_{cell} \) reaches 0.03V? (Round to 2 sig figs)**

Below the questions, there are empty boxes labeled:
**V** (for voltage) and **M** (for molarity) respectively, to write the answers for questions 2 and 3.

**Explanation of the diagram:**

- The table presents the half-reactions for Nickel and Cobalt with their respective standard electrode potentials in volts.
- There is a photograph showing the handwritten balanced overall reaction.
- There are two questions where learners are expected to calculate the cell potential and determine the concentration of \( Ni^{2+} \) for a given cell potential.

This problem set is intended for students to apply their knowledge of electrochemistry, specifically in writing balanced reactions, calculating cell potentials, and understanding the Nernst equation.
Transcribed Image Text:**Galvanic Cell Problem Set** **Problem Description:** A galvanic cell consists of a Ni/Ni²⁺ half-cell and a Co/Co²⁺ half-cell with initial concentrations: \([Ni^{2+}] = 0.80 \, M\) and \([Co^{2+}] = 0.20 \, M\) at 298.15 K. **Half-reactions and Standard Electrode Potentials:** | **Half-Reaction** | **E° (V)** | |--------------------------------------|------------| | \( Ni^{2+}(aq) + 2e^- \rightarrow Ni(s) \) | -0.25 | | \( Co^{2+}(aq) + 2e^- \rightarrow Co(s) \) | -0.28 | **Question 1: Write the balanced overall reaction that powers the cell.** *Provided answer:* \[ Co(s) + Ni^{2+}(aq) \rightarrow Co^{2+}(aq) + Ni(s) \] **Question 2: Calculate \( E_{cell} \) for the redox reaction. (Round to 2 decimal places)** **Question 3: What is \(\left[ Ni^{2+} \right]\) when \( E_{cell} \) reaches 0.03V? (Round to 2 sig figs)** Below the questions, there are empty boxes labeled: **V** (for voltage) and **M** (for molarity) respectively, to write the answers for questions 2 and 3. **Explanation of the diagram:** - The table presents the half-reactions for Nickel and Cobalt with their respective standard electrode potentials in volts. - There is a photograph showing the handwritten balanced overall reaction. - There are two questions where learners are expected to calculate the cell potential and determine the concentration of \( Ni^{2+} \) for a given cell potential. This problem set is intended for students to apply their knowledge of electrochemistry, specifically in writing balanced reactions, calculating cell potentials, and understanding the Nernst equation.
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