What will happen, anode is made of nickel instead af graphite in the extraction of aluminium from `AICl_3`?

Options

A. Nickel will be affected by high temperature
B. Nickel will combine with `Cl_2`
C. Nickel is insulator
D. Al of these

Answer

To address the question of what would happen if the anode is made of nickel instead of graphite in the extraction of aluminum from AlCl3, we can analyze the situation step by step.

### Step-by-Step Solution:

1. **Understanding the Process**:
- The extraction of aluminum from aluminum chloride (AlCl3) is typically done through electrolysis. In this process, aluminum ions are reduced at the cathode, while chloride ions are oxidized at the anode.

2. **Electrode Materials**:
- The traditional anode material used in this process is graphite. Graphite is a good conductor of electricity and is resistant to oxidation under the conditions of electrolysis.

3. **Properties of Nickel**:
- Nickel has a high melting point, which means it can withstand the high temperatures generated during the electrolysis process without melting or deforming.

4. **Reactivity of Nickel**:
- Unlike graphite, nickel is a metal that can react with chlorine gas (Cl2), which is produced at the anode during the electrolysis of AlCl3. This is a crucial difference between nickel and graphite.

5. **Expected Reactions**:
- When using nickel as the anode, the following reaction can occur:
\[ \text{Ni} + \text{Cl}_2 \rightarrow \text{NiCl}_2 \]
- This means that nickel will react with chlorine gas to form nickel chloride, which would not happen with graphite.

6. **Consequences of Using Nickel**:
- The reaction of nickel with chlorine would lead to the consumption of the nickel anode, resulting in a loss of material and potentially affecting the efficiency of aluminum extraction.
- The formation of nickel chloride could also complicate the electrolysis process and lead to impurities in the aluminum produced.

7. **Conclusion**:
- Therefore, using nickel as an anode instead of graphite in the extraction of aluminum from AlCl3 would lead to the formation of nickel chloride and would not be an effective method for aluminum extraction.

### Summary:
In summary, using nickel as an anode instead of graphite in the electrolysis of AlCl3 would result in the reaction of nickel with chlorine gas, leading to the formation of nickel chloride and affecting the efficiency of aluminum extraction.