An electrochemical cell is made of aluminium and tin electrodes with their standard reduction potentials -1.66 V and 0.14 V respectively. Select the anode and the cathode, represent the cell and write the cell reaction. Find the e.m.f. of the cell

Explanation

To solve the problem step by step, we will follow these instructions:

### Step 1: Identify the Anode and Cathode
The standard reduction potentials for the electrodes are given as:
- Aluminium (Al) → Al³⁺ + 3e⁻: E° = -1.66 V
- Tin (Sn) → Sn²⁺ + 2e⁻: E° = +0.14 V

The anode is where oxidation occurs, and the cathode is where reduction occurs. Since we want to make the cell potential (E°cell) positive, we will choose:
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