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

### Step-by-Step Solution:

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

2. **Identifying the Anode Material**: In the standard process, the anode is made of graphite. Graphite is a good conductor of electricity and does not react with chlorine at the temperatures used in the electrolysis of AlCl3.

3. **Replacing Graphite with Nickel**: If we replace the graphite anode with a nickel anode, we need to consider the properties of nickel. Nickel has a higher melting point than graphite, which means it can withstand the high temperatures involved in the electrolysis process.

4. **Reactivity of Nickel**: However, nickel is also reactive with chlorine. At the high temperatures present during the electrolysis, nickel can react with chlorine gas produced at the anode.

5. **Formation of Nickel Chloride**: When nickel reacts with chlorine, it forms nickel chloride (NiCl2). This reaction is significant because it means that instead of just oxidizing chloride ions, the nickel anode will also be consumed in the process, leading to the formation of NiCl2.

6. **Conclusion**: Therefore, the main consequence of using nickel instead of graphite as the anode in the extraction of aluminum from AlCl3 is that nickel will combine with chlorine to form nickel chloride. This is a critical point to note, as it affects the efficiency and outcome of the electrolysis process.

### Final Answer:
When anode is made of nickel instead of graphite in the extraction of aluminum from AlCl3, nickel will combine with chlorine to form NiCl2.