This document contains 3 questions about classifying reactants as Lewis acids or bases in chemical reactions. The first question identifies methanol (CH3OH) as the Lewis base and boron trifluoride (BF3) as the Lewis acid in their reaction. The second question classifies aluminum ions (Al3+) as the Lewis acid and water (H2O) as the Lewis base in the given reaction. The third question asks to classify additional reactants as either Lewis acids or bases.

1. Name Date
Lewis Acid and Base Section
Q 1: For the following reaction, indicate which reactant is the Lewis acid and
which is the Lewis base.
a. BF3 is the Lewis acid.
b. BF3 is the Lewis base.
c. CH3OH is the Lewis acid.
d. CH3OH is the Lewis base.
e. This not a Lewis acid-base reaction.
Q 2 : For the following reaction, indicate which reactant is the Lewis acid and
which is the Lewis base.
Al3+ + 6H2O ⇌ Al(OH)3 + 3H3O+
a) Al3+ is the Lewis acid.
b) Al3+ is the Lewis base.
c) H2O is the Lewis acid.
d) H2O is the Lewis base.
e) This is not acid-base reaction.

2. Q 3: Classify each of the following as a Lewis acid or a Lewis base.