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The boiling point of n-butyl alcohol, is...

The boiling point of n-butyl alcohol, isobutyl alcohol, sec-butyl alcohol and tert-butyl alcohol are `118^@C`,`108^@C`,`99^@C` and `82^@C` respectively. Explain.

Text Solution

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As branching increases intermolecular van der Waal.s force become weaker and the boiling point decreases. Therefore n-butyl alcohol has highest boiling point `118^@C` and tert-butyl alcohol has lowest boiling point `83^@C`. Isobutyl alcohol is a primary alcohol and hence its boiling points is higher than that of sec butyl alcohol.
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