Problem: The standard emf for the cell using the overall cell reaction below is +2.20 V:The emf generated by the cell when[Al3+] = 4.5 x 10-3 M and [I-] = 0.15 M is _____ V.

FREE Expert Solution

We're being asked to calculate the emf generated by the cell when [Al3+] = 4.5×10‒3 M and [I] = 0.15 M.


We're going to calculate for Ecell using the following steps:

Step 1: Write the two half-reactions and determine the anode and cathode.
Step 2: Write the overall reaction and determine the number of electrons transferred (n).
Step 3: Calculate Ecell using the Nernst equation.

Ecell=E°cell-(0.05916 Vn) log Q


Step 1: Write the two half-reactions and determine the anode and cathode.

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Problem Details

The standard emf for the cell using the overall cell reaction below is +2.20 V:

The emf generated by the cell when

[Al3+] = 4.5 x 10-3 M and [I-] = 0.15 M is _____ V.