Question

How do you distinguish between n-propyl alcohol and isopropyl alcohol

Answer 1

$\huge{\texbf\red{ANSWER}}}$

First of all u should know about neo , iso .

$\huge{\texbf\red{prefix neo }}}$

The prefix neo is used with those chains which are straight and continuous means no substituent is attached .

$\huge{\texbf\red{Example }}}$

n_propyl alcohol

CH3_CH2_CH2_OH

This is also known as primary alcohol as alcoholic group is attached to first alkyl group

$\huge{\texbf\red{prefix iso }}}$

The prefix iso is used with those chains which have a methyl group attached to the second last carbon atom of the continuous chain .

$\huge{\texbf\red{Example }}}$

iso_propyl alcohol

(Refer the above drawing)

It is also called secondary alcohol , as alcoholic group is attached to second Carbon .

SO

As these given structures or chains are primary alcohol and secondary alcohol , So

We know that a test is performed to distinguish primary , secondary and tertiary alcohols that is :-

$\huge{\texbf\red{LUCAS TEST}}}$

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