Problem: A student devises an electrochemical cell with the following cell notation:Cr (s) | Cr2+ (aq, 0.02 M) | | Co2+ (aq, 0.9 M) | Co (s)Calculate Δε for this galvanic cell. Show all work and circle and circle your final answer.

FREE Expert Solution

For this problem, we’re being asked to calculate for the Ecell with the cell notation:

Cr (s) | Cr2+ (aq, 0.02 M) | | Co2+ (aq, 0.9 M) | Co (s)


To do so, follow these steps:

Step 1. Determine the E°cell and value of n

Step 2. Calculate Ecell



Step 1. When writing a cell notation, we use the following format – “as easy as ABC

Loss of Electron is an Oxidation process undergone by the Reducing Agent (LEORA). In the Anode, Oxidation happens (An Ox)

Gain of Electron is a Reduction process undergone by the Oxidizing Agent (GEROA). Reduction happens in the Cathode (Red Cat)

We can determine the anode and cathode by comparing their E° values.

• ↓ E° → oxidation → anode

• ↑ E° → reduction → cathode


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Problem Details

A student devises an electrochemical cell with the following cell notation:

Cr (s) | Cr2+ (aq, 0.02 M) | | Co2+ (aq, 0.9 M) | Co (s)

Calculate Δε for this galvanic cell. Show all work and circle and circle your final answer.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the The Nernst Equation concept. You can view video lessons to learn The Nernst Equation. Or if you need more The Nernst Equation practice, you can also practice The Nernst Equation practice problems.

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Our tutors rated the difficulty ofA student devises an electrochemical cell with the following...as medium difficulty.