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What effect does branching of an alkane ...

What effect does branching of an alkane chain has on its boiling point?

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The boiling point of the alkanes decreases with branching. This is because with the increase in branching, the surface area of an alkane approaches that of a sphere. Since sphere has minimum surface are, therefore, van der Waals forces of attraction are minimum and hence boiling point decreases with branching.
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MODERN PUBLICATION-HYDROCARBONS-NCERT FILE (NCERT TEXTBOOK EXERCISE)
  1. An alkene ‘A’ contains three C – C, eight C – H (sigma) bonds and one...

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  2. Propanal and pentan-3-one are the ozonolysis products of an alkene? Wh...

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  3. Write chemical equations for combustion reaction of the following hydr...

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  4. Draw the cis and trans structures of hex-2-ene. Which isomer will have...

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  5. Why is benzene extra ordinarily stable though it contains three double...

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  6. What are the necessary conditions for any system to be aromatic?

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  7. Explain why the following systems are not aromatic ?

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  8. How will you convert benzene into (i) p-nitrobromobenzene (ii) m-...

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  9. In the alkane H3C-CH(2)-C(CH(3))2-CH(2)-CH(CH(3))2, identify 1^(@),2^(...

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  10. What effect does branching of an alkane chain has on its boiling point...

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  11. Addition of HBr to propene yields 2-bromopropane, while in the presenc...

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  12. Write down the products of ozonolysis of 1, 2-dimethylbenzene (o-xylen...

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  13. Arrange benzene, n-hexane and ethyne in decreasing order of acidic beh...

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  14. Why does benzene undergo electrophilic substitution reactions easily a...

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  15. How would you convert the following compounds into benzene? (i) Ethy...

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  16. Write structures of all the alkenes which on hydrogenation give 2-meth...

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  17. Arrange the following set of compounds in order of their decreasing re...

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  18. Out of benzene, m-dinitrobenzene and toluene which will undergo nitrat...

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  19. Suggest the name of a Lewis acid other than anhydrous aluminium chlori...

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  20. Why is Wurtz reaction not preferred for the preparation of alkanes con...

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