Assignment 12 (self-evaluation)
Chapter 25 Organic chemistry
1. Write down examples of the most typical reactions for the following classes of organic compounds:
a) Alkanes (p.1073)
C2H6 (g) +
b) Alkenes and Alkynes (p. 1077)
C2H4 (g) +
cyclopentene +
C2H4 (g) +
c) Aromatic hydrocarbons (p.1081)
C6H6 +
2. Draw the structures of the following organic compounds:
a) 2-butanol
b) cis-2-hexene
c) para-dinitrobenzene
d) 2-methyl-1-butene
e) 4,5-dimethyl-2-pentyne
3. Name the following organic compounds
4. Functional groups (p.1071,1094)
Circle and name the functional groups which present in the following organic compounds:
Answers
1. Write down the most typical reactions for the following classes of organic compounds:
a) Alkanes (p.1073)
combustion reactions
2C2H6 (g) + 7O2 (g) à 4CO2 (g) + 6 H2O (g)
b) Alkenes and Alkynes (p. 1077)
addition, for example, Cl2
C2H4 (g) + Cl2 (g) à H2ClC-CClH2
for cyclic alkenes also addition, for example, of H2:
C2H2 (g) + Cl2 (g) à HClC=CClH cis- and trans-1,2-dichloroethene
c) Aromatic hydrocarbons (p.1081)
substitution
C6H6 + HNO3 à C6H5NO2 + H2O
(nitrobenzene)
2.
2-butanol
cis-2-hexene
para-dinitrobenzene
2-methyl-1-butene
4,4-dimethyl-2-hexyne
3.
4. Functional groups
From left to right
top structure: alkene, alkyne, alcohol
middle structure: aldehyde, amine, ketone, carboxylic acid
bottom structure: amide, ether, ester