Bronsted Lowry Acid
Arrhenius Acid
Lewis Acid
Lewis Base
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Answer is Wrong!
The correct answer is C. Lewis Acid.
A Lewis acid is a chemical species that accepts an electron pair to form a Lewis adduct. Lewis acids are typically electron-deficient species, such as metal ions and molecules with multiple bonds.
Aluminium chloride is a Lewis acid because it can accept an electron pair from a Lewis base. For example, aluminium chloride can react with ammonia to form a Lewis adduct:
$$AlCl_3 + :NH_3 \to [AlCl_3(NH_3)]^+$$
In this reaction, the ammonia molecule donates a lone pair of electrons to the aluminium ion. This results in the formation of a coordinate
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