CHEM 120 FINAL EXAM /CHEM120 WEEK 8 FINAL
EXAM LATEST ACTUAL EXAM 2024-2025
QUESTIONS AND CORRECT DETAILED
ANSWERS|AGRADE
Terms in this set (171)
#1 These two compounds B
are:
A) cis-trans isomers
B) constitutional isomers
C) enantiomers
D) diastereomers
E) not related.
1 What is the smallest C
alkane that is a liquid at
room temperatures (say 20
oC)?
A) Propane
B) Butane
C) Pentane
D) Hexane
#1 Which of the structures C
have delocalized
electrons?
A) a,b B) b,c C) a,c D) All
of them
,#2 These two compounds D
are:
A) cis-trans isomers.
B) constitutional isomers.
C) enantiomers.
D) identical.
E) not related.
#2 Which of the structures B
have delocalized
electrons?
A) a,b B) b,c C) a,c D) All
of them
6 Resonance structures E
are a set of Lewis
structures that contribute
to the true molecular
structure. Which of the
following rules must be
followed when you draw
resonance structures of a
given molecule?
a. atoms never move.
b. only p electrons and
nonbonding electrons can
move, sigma electrons
never move,
c. total # of electrons
does not change.
A) a B) b C) c D) a,b E)
a,b,c.
,11 Which of the following is B
the strongest base?
HO-, F-, Cl-, H2N-
A) HO- B) H2N- C) Cl- D)
F-
Alcohols can be A
dehydrated into alkenes in
presence of concentrated
strong acid. What
mechanisms are expected
for the reactions of
primary and tertiary
alcohols?
A) E2/E1 B) E1/E2 C) SN1/
SN2 D) SN2/ SN1
Alcohols of all C
classifications (primary to
tertiary) can be made
from reactions of different
aldehyde or ketone with a
Grignard reagent. Which
compound will give you a
secondary alcohol?
A) 2-butanone
B) acetone
C) propanal
D) formaldehyde
, All carboxylic acid C
derivatives can react with
a Grignard reagent.
However, only _____ alcohol
can be produced from
derivatives of carboxylic
acid heavier than formic
acid.
A) primary B) secondary
C) tertiary
All carboxylic acid C
derivatives can react with
a Grignard reagent.
However, only _____ alcohol
can be produced from
derivatives of carboxylic
acids heavier than formic
acid.
A) primary B) secondary
C) tertiary
All carboxylic acid D
derivatives including
nitriles ____________.
A) have a carbonyl group
B) have an oxygen atom
C) have a carbon atom
with an oxidation number
of +2
D) have a carbon atom
with an oxidation number
of +3.
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