Question

Choose one:____.

A. FeBr3 is the Lewis acid, and FeBr4-1 is the Lewis base.
B. FeBr4-1 is the Lewis acid, and Br 1 is the Lewis base.
C. Br 1 is the Lewis acid, and FeBr4-1 is the Lewis base.
D. FeBr3 is the Lewis acid, and Br2 is the Lewis base.
E. Br 1 is the Lewis acid, and FeBr4-1 is the Lewis base.
F. FeBr4-1 is the Lewis acid, and FeBr3 is the Lewis base.

Answer 1

FeBr3 is the Lewis acid, and FeBr4-1 is the Lewis base.

Step-by-step explanation:

A Lewis acid is any specie that has empty orbitals into which it can receive a lone pair of electrons.

A Lewis base is any specie that donates a lone pair of electrons to another to form a dative covalent bond.

If we look at the species listed in the options, FeBr3 is lone pair acceptor hence it is a Lewis acid while FeBr4- is a lone pair donor hence it is Lewis base.