Answer Happy

3. Vinegar is a dilute solution of acetic acid (CH3COOH). Oil
and vinegar form two
separate layers (do not dissolve in one another). Explain why this
occurs. In forming
your explanation, be sure to address the following questions:
a. Draw the best Lewis structure for the CH3COOH (acetic acid)
molecule.
(Hint: the acidic H is bonded to O in an oxy-acid molecule).
Evaluate each atom using formal charge to prove you have the best
structure.
Show your math work as well as your formal charge answers.
b. Draw all the resonance structures for the CH3COO– (acetate
ion). (Hint: make
sure you have the best initial structure first!)
c. What type of compound is acetic acid/vinegar (polar or
non-polar)?
d. What type(s) of intermolecular forces are present in acetic
acid/vinegar?
e. The structure of oil is primarily non-polar. What type(s) of
intermolecular
force(s) is/are present in oil?
f. Explain why oil and vinegar do not mix but rather form two
separate layers.
g. Identify the number of π bonds in the structure of acetic
acid.
h. Identify the number of σ bonds in the structure of acetic
acid.
i. 25.00 mL of a 1.75 M solution of acetic acid is diluted to
350.00 mL. What is
the resulting concentration (in Molarity) of the new solution?