CW2: Resonance Structures
Name: __________________________________________________ TP: ____________
Honors Chemistry
Date: 2/3/14
CLASSROOM COPY: DO NOT WRITE ON!!!
1. Write Lewis Structures for the following. Show all
resonance structures where applicable.
NO2-, NO3-, N2O4 (N2O4 exists as O2N NO2)
2. Write Lewis Structures for the following. Show all
resonance structures where applicable.
OCN-, SCN-, N3- (Carbon is the central atom in OCNand SCN-).
3. Formic acid is responsible for the sting in biting
ants. By mass, formic acid is 26.10% C, 4.38% H,
and 69.52% O. The molar mass of formic acid is
46.02 g/mol. Find the molecular formula of formic
acid and draw its Lewis structure.
4. Consider the neutralization reaction:
5. Some of the important pollutants in the atmosphere
are ozone (O3), sulfur dioxide, and sulfur trioxide.
Write Lewis structures for these three molecules.
Show all resonance structures where applicable.
6. Benzene (C6H6) consists of a six-membered ring of
carbon atoms with one hydrogen bonded to each
carbon. Write Lewis structures for benzene,
including resonance structures.
HCl + NaOH  H2O + NaCl
Write the reaction showing the Lewis structures of
each of the reactants and products.