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Arrange the following compounds in incre...

Arrange the following compounds in increasing order of boiling point :
Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol

A

Propan-1-ol, butan-2-ol, butan-1-ol, pentan-1-ol

B

Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol

C

Pentan-1-ol, butan-2-ol, butan-1-ol, propan-1-ol

D

Pentan-1-ol, butan-1-ol, butan-2-ol, propan-1-ol.

Text Solution

Verified by Experts

The correct Answer is:
A
The boiling points increase as the molecular mass o the alcohol increases. Further, among isomeric alcohols, `1^(@)` alcohols have higher boiling points than `2^(@)` alcohols. In the light of these facts, the b.ps increase in the order propan-1-olltbutan-2-olltbutan-1-olltpentan-1-ol, therefore, option (a) is correct.
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Arrange the followig compounds in increasing order of boiling points: (a) pentan-1-ol, butan-1-ol, butan-2-ol, ethanol, propan-1-ol, methanol. (b) pentan-1-ol, n-butane, pentanal, ethoxyethane.

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Knowledge Check

  • Arrange the following compounds in the increasing order of boiling point. Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol

    A
    Propan-1-ol, butan-2-ol, butan-1-ol, pentan-1-ol
    B
    Propan-1-ol, butan-1-ol, butan-2-ol, pentan-1-ol
    C
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    D
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  • Arrange the following compound in decreasing order of boiling point (i) propan-1-ol (ii) butane-1-ol (iii) butan-2-ol (iv) pentan-1-ol

    A
    a) i gt iii gt ii gt iv
    B
    i gt ii gt iii gt iv
    C
    iv gt iii gt ii gt i
    D
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  • Arrange the following compounds in the decreasing order of their boiling points. (I) Methanol (II) Ethanol (III) propan-1-ol (IV) Butan-1-ol

    A
    `I gt II gt III gt IV`
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    `II gt I gt IV gt III`
    C
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    D
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