Benzene

Question 1

is the parent compound of the various aromatic compound. That is also the simplest organic, aromatic hydrocarbon.

Answer 1

Benzene

Question 2

Benzene is also a major industrial chemical made from

Answer 2

coal and oil.

Question 3

Who discovered Benzene

Answer 3

Michael Faraday discovered Benzene in illuminating gas in 1825 and was made available in large quantities in 1842 after

Question 4

Where does the word benzene comes from

Answer 4

derives historically from gum benzoin, sometimes called ‘Benjamin’.
-Gum benzoin was known as an aromatic resin.

Question 5

Formula of Benzene

Answer 5

C6H6

Question 6

Composition of Benzene

Answer 6

• Composed of 6 carbon atoms and 6 hydrogen atoms.
• Hexagonal ring structure with alternating single and double bonds.

Question 7

Proposed the ring structure of benzene in 1865.

Answer 7

August Kekulé

Question 8

Density of Benzene

Answer 8

0.87g cm-3.

Question 9

Boiling point:

Answer 9

80.5°C

Question 10

Melting point:

Answer 10

5.5°C

Question 11

Benzene shows resonance.
It is highly inflammable and burns with a sooty flame.T or F

Answer 11

True

Question 12

Who developed the concept of Resonance of Benzene

Answer 12

Linus Pauling i

Question 13

3 Uses of Benzene

Answer 13

Chemical Production:

Solvent

Manufacturing

Question 14

Health Effect of Benzene

Answer 14

Affects CNS if exposed.
Drowsiness, dizziness,
headaches, as well as eye, skin, and respiratory tract irritation, and, at high levels, unconsciousness.

Question 15

process of benzene

Answer 15

electrophilic substitution

Question 16

Steps in electrophilic substitution

Answer 16

The electrophile is created.
Carbocation formation in the middle.
A proton is removed from a carbocation.

Question 17

Common Electrophilic Substitution Reactions

Answer 17

1. Nitration of Benzene
2. SulfonationofBenzene
3. Halogenation of Benzene 4. Alkylation and Acylation

Question 18

benzene combines with concentrated nitric acid to generate nitrobenzene

Answer 18

Nitration of Benzene

Question 19

a process of heating benzene with fuming sulphuric acid (H2SO4 +SO3) to produce benzenesulfonic acid.

Answer 19

Sulfonation of Benzene

Question 20

The hydrogen ion of an arene is replaced with one halogen atom in an electrophilic substitution process.

Answer 20

Halogenation of Benzene

Question 21

-The Friedel-Crafts process is the common name for this action.
- The production of the acylium ions is the initial step

Answer 21

Alkylation and Acylation