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IB Chemistry Test Prep

Category - IB Chemistry

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Which of the following molecules acts as a Lewis acid?

HCl
SO₄^2-
CCl₄
H₃PO₄
BH₃

Explanation

Answer: BH₃

A Lewis acid is an electron pair receiver. In the context of the question, the only molecule that readily receives electron pairs is BH₃. Therefore, BH₃ is a Lewis acid.

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