CHEM 219 ACTUAL MODULE 5 | COMPLETE QUESTIONS AND ANSWERS | 2026
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1. dehydration is an ______ reaction. elimination (E1 and E2)
2. A secondary alcohol can only be oxidized to ketone a
3. _______is a combination of chromium triox- Jone's Reagent
ide (CRO3 in H2CrO4) with aqueous sulfuric acid. It is
considered a ___________ oxidizing strong agent
4. When alcohols are reacted with_________ , phosphorus
trihalides, they form______ and three molar equiva-
lents of an_________ . phosphoric acid,
alkyl halide
5. When a primary alcohol is reacted with aldehyde an appropriate
oxidizing reagent, it will be converted to an ________ first and further
carboxylic acid reacted to a ______
6. hydride ion negatively charged hydrogen anion (H:-)
* Hydride ion is a potent
nucleophile and can react
with the carbonyl carbon of
an aldehyde or ketone
7. Both esters and carboxylic acids can be re- primary alcohols by hydride
transfer reducduced to .... ing agents.
,8. Jone's reagent (H2CrO4) will oxidize an alcohol and bypass the
aldehyde stage and go straight to creating a carboxylic acid. secondary
alcohols are oxidized straight to ketones
9. crown ethers naming named
[X] crown - Y
where X is the ring size (
both C and O and Y is the
number of O atoms)
10. cyclic ethers naming use prefix - oxa w/ corresponding name of
cyclic ether ( include O atom
in ring number aka is 3
carbons and 1 O then it is
oxacyclobutane not
propane)
11. epoxides 3 membered cyclic ethers (also called oxi-
ranes)
very highly strained and
reactive
12. ethers naming - simple ethers named by adding ether as
suffix
- otherwise they're named
as an alkoxy substituent of
the parent chain, cyclic
ethers (larger than 3
, rings/epoxides) use prefix "-
oxa"
13. crown ethers have the ability to ..... solvate cations within
interior cavity of their
ring structure (Host/guest).
The size of the ring controls
w/ atoms can fit inside the
cavity
14. do ethers have higher or lower BP and MP lower compared to
alcohols of similar MF
the lack of intermolecular
attraction causes their lower
MP and BPs
15.
for the production of simple symmetric using concentrated sulfuric
ethers from 2 alcohols what reaction and acid (H2SO4) and heat via
reagent is used and what mechanism? SN2 displacement.
dehydration (also called condensation)
by product is H2O
16. Williamson Synthesis Most important method for asymmetric
ether synthesis. ALWAYS
produces an asymmetric
ether.
1. An alcohol is
converted to its conjugate
base (alkoxide ion, RO-)
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1. dehydration is an ______ reaction. elimination (E1 and E2)
2. A secondary alcohol can only be oxidized to ketone a
3. _______is a combination of chromium triox- Jone's Reagent
ide (CRO3 in H2CrO4) with aqueous sulfuric acid. It is
considered a ___________ oxidizing strong agent
4. When alcohols are reacted with_________ , phosphorus
trihalides, they form______ and three molar equiva-
lents of an_________ . phosphoric acid,
alkyl halide
5. When a primary alcohol is reacted with aldehyde an appropriate
oxidizing reagent, it will be converted to an ________ first and further
carboxylic acid reacted to a ______
6. hydride ion negatively charged hydrogen anion (H:-)
* Hydride ion is a potent
nucleophile and can react
with the carbonyl carbon of
an aldehyde or ketone
7. Both esters and carboxylic acids can be re- primary alcohols by hydride
transfer reducduced to .... ing agents.
,8. Jone's reagent (H2CrO4) will oxidize an alcohol and bypass the
aldehyde stage and go straight to creating a carboxylic acid. secondary
alcohols are oxidized straight to ketones
9. crown ethers naming named
[X] crown - Y
where X is the ring size (
both C and O and Y is the
number of O atoms)
10. cyclic ethers naming use prefix - oxa w/ corresponding name of
cyclic ether ( include O atom
in ring number aka is 3
carbons and 1 O then it is
oxacyclobutane not
propane)
11. epoxides 3 membered cyclic ethers (also called oxi-
ranes)
very highly strained and
reactive
12. ethers naming - simple ethers named by adding ether as
suffix
- otherwise they're named
as an alkoxy substituent of
the parent chain, cyclic
ethers (larger than 3
, rings/epoxides) use prefix "-
oxa"
13. crown ethers have the ability to ..... solvate cations within
interior cavity of their
ring structure (Host/guest).
The size of the ring controls
w/ atoms can fit inside the
cavity
14. do ethers have higher or lower BP and MP lower compared to
alcohols of similar MF
the lack of intermolecular
attraction causes their lower
MP and BPs
15.
for the production of simple symmetric using concentrated sulfuric
ethers from 2 alcohols what reaction and acid (H2SO4) and heat via
reagent is used and what mechanism? SN2 displacement.
dehydration (also called condensation)
by product is H2O
16. Williamson Synthesis Most important method for asymmetric
ether synthesis. ALWAYS
produces an asymmetric
ether.
1. An alcohol is
converted to its conjugate
base (alkoxide ion, RO-)
