H H
| |
H—C—C—H
| | ;CH³CH²CH=CH²
H—C—C—H
| |
H H
Which one will undergo substitution reaction and which one will undergo addition reaction? Explain.
Answers
Explanation:
P dilip_k · Ernest Z.
Apr 9, 2016
C
3
H
6
and
C
2
H
2
undergo addition reactions.
Explanation:
Unsaturated compounds having one or more carbon-carbon double bonds or triple bonds or both type of bonds undergo addition reactions .
For open chain hydrocarbons, the general molecular formula of a saturated compound (alkane category) is
C
n
H
2
n
+
2
.
The general molecular formula of an aliphatic hydrocarbon with one double bond is
C
n
H
2
n
, and the general molecular formula of a hydrocarbon having one triple bond or two double bonds is
C
n
H
2
n
−
2
.
Matching with these formulas, we can decide whether the the compound is unsaturated or not.
Here,
C
3
H
8
=
C
3
H
2
×
3
+
2
,
C
2
H
6
=
C
2
H
2
×
2
+
2
, and
C
H
4
=
C
H
2
×
1
+
2
.
All three follow the general formula of a saturated compound, i.e.
C
n
H
2
n
+
2
, so they will not undergo addition reaction
C
3
H
6
=
C
3
H
2
×
3
follows the general formula
C
n
H
2
n
,
and
C
2
H
2
=
C
2
H
2
×
2
−
2
follows the general formula
C
n
H
2
n
−
2
, so they are unsaturated and undergo addition reactions.