A concentration cell is an electrochemical cell where the anode and cathode have the same metal electrode and the electrolyte but the concentration of electrolyte in anode and cathode cells is different.

We are provided with the cell notation for zinc-based concentration cell.

A **cell notation** is a shorthand way of writing a chemical reaction that occurs inside an electrochemical cell.

- Cell notation is written from anode to cathode.
- The
**left side**of the cell notation represents**oxidation (anode) reaction**. - The
**right side**of the cell notation represents**reduction (cathode) reaction**.

The voltage generated by the zinc concentration cell described by,

Zn(s)|Zn^{2+}(aq, 0.100 M) || Zn^{2+}(aq, ? M)|Zn(s)

is 19.0 mV at 25°C. Calculate the concentration of the Zn ^{2+}(aq) ion at the cathode.

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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.