Chem 120 final exam questions and
Answers Graded A+
What is the correct order of melting points for the following alkanes, from highest
to lowest temperature? - Correct answer-heptane > hexane > ethane > methane
2. Given an alkane that contains 25 carbon atoms. How many hydrogen atoms are
present in its structure? a) - Correct answer-) 52
3. Which of the following properly describes constitutional (structural) isomers? -
Correct answer-compounds with the same molecular formula, but a different order
of attachment of atoms
4. How many secondary and tertiary carbons, respectively, are in the following
compound? - Correct answer-) 2, 3
5. What is the molecular formula and name of the following compound? - Correct
answer-C4H9Cl, 2-chlorobutane
6. What is the IUPAC name of the compound below? - Correct answer-
methylcyclohexane
which reaction type is most characteristic of alkenes? - Correct answer-addition
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,what is the IUPAC name for the compound below? - Correct answer-trans- 2, 3-
dichlorvos-2-pentene
what is the structure and name of the product of the following reaction? - Correct
answer-ch3ch2ch2ch3, butane
alkanes and alkenes are no polar compounds and hence have poor solubility in
water - Correct answer-true
carbon monoxide may be produced in the incomplete combustions of methane. -
Correct answer-true
The names ortho- dimethylbenzene and 1,4- dimethylbenzene represent the same
compound - Correct answer-false
if a compound's name ends with " diene", this suggest that is it an alkene
containing two double bonds in its structure - Correct answer-true
what is the oxidation of a primary alcohol - Correct answer-aldehyde
which of the following alcohol is tertiary alcohol? - Correct answer-2- methyl- 2-
butanol
what compound is produced when 2 methyl-3 pentanol is oxidized ? - Correct
answer-2 methyl- 3 pentanone
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, what class of compounds is represented by the general formula R-O-R - Correct
answer-ethers
which of the following compounds will give a silver mirror finish when treated
with tollens' reagent ? - Correct answer-butanal
which is the IUPAC name for the following compounds - Correct answer-2-chloro,
3- hexanol
what is the proper IUPAC name for the three carbon aldehyde - Correct answer-
propanal
what class of compounds is commonly used as a medical anesthetic - Correct
answer-ethers
a phenol is a compound that contains a hydroxyl group attached to a benzene ring -
Correct answer-true
by definition oxidation is a process that involves removal of hydrogens - Correct
answer-true
The oxidation of a ketoneproduces a carboxylic acid - Correct answer-true
14. Small (low molecular weight) aldehydesare generally lesswater-soluble than
large ones - Correct answer-true
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Answers Graded A+
What is the correct order of melting points for the following alkanes, from highest
to lowest temperature? - Correct answer-heptane > hexane > ethane > methane
2. Given an alkane that contains 25 carbon atoms. How many hydrogen atoms are
present in its structure? a) - Correct answer-) 52
3. Which of the following properly describes constitutional (structural) isomers? -
Correct answer-compounds with the same molecular formula, but a different order
of attachment of atoms
4. How many secondary and tertiary carbons, respectively, are in the following
compound? - Correct answer-) 2, 3
5. What is the molecular formula and name of the following compound? - Correct
answer-C4H9Cl, 2-chlorobutane
6. What is the IUPAC name of the compound below? - Correct answer-
methylcyclohexane
which reaction type is most characteristic of alkenes? - Correct answer-addition
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,what is the IUPAC name for the compound below? - Correct answer-trans- 2, 3-
dichlorvos-2-pentene
what is the structure and name of the product of the following reaction? - Correct
answer-ch3ch2ch2ch3, butane
alkanes and alkenes are no polar compounds and hence have poor solubility in
water - Correct answer-true
carbon monoxide may be produced in the incomplete combustions of methane. -
Correct answer-true
The names ortho- dimethylbenzene and 1,4- dimethylbenzene represent the same
compound - Correct answer-false
if a compound's name ends with " diene", this suggest that is it an alkene
containing two double bonds in its structure - Correct answer-true
what is the oxidation of a primary alcohol - Correct answer-aldehyde
which of the following alcohol is tertiary alcohol? - Correct answer-2- methyl- 2-
butanol
what compound is produced when 2 methyl-3 pentanol is oxidized ? - Correct
answer-2 methyl- 3 pentanone
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, what class of compounds is represented by the general formula R-O-R - Correct
answer-ethers
which of the following compounds will give a silver mirror finish when treated
with tollens' reagent ? - Correct answer-butanal
which is the IUPAC name for the following compounds - Correct answer-2-chloro,
3- hexanol
what is the proper IUPAC name for the three carbon aldehyde - Correct answer-
propanal
what class of compounds is commonly used as a medical anesthetic - Correct
answer-ethers
a phenol is a compound that contains a hydroxyl group attached to a benzene ring -
Correct answer-true
by definition oxidation is a process that involves removal of hydrogens - Correct
answer-true
The oxidation of a ketoneproduces a carboxylic acid - Correct answer-true
14. Small (low molecular weight) aldehydesare generally lesswater-soluble than
large ones - Correct answer-true
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