Question

Which of the following is a Lewis acid?

• A. $BF_{4}^{-}$
• B. $OH^{-}$
• C. $AlCl_{3}$
• D. $RNH_{2}$

Answer 1

Answer: (C)

$AlCl_{3}$

Answer 2

$AlCl_3$ Because Lewis acids are electron pair acceptor.