First slide

Alkanes

Question

As compared to its parent ethane, an ethyl radical contains

Moderate

A

One less hydrogen
B

One less carbon
C

One more hydrogen
D

One more carbon

Solution

[Step 1]:
The general formulae of alkanes is $C_{n} H_{2 n + 2}$
The alkyl general formulae is $C_{n} H_{2 n + 1}$
The alkyl group has one hydrogen less than alkane.
[Step 2]:
Therefore the ethyl radical contains one hydrogen less than ethane
Since ethane is C2H6
and ethyl is C2H5

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