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Chemistry : Organic Chemistry – Some Basic Principles and Techniques

Short Answer Type

41. Arrange the following free radicals in the order of decreasing stability:

bold C with bold asterisk times on top bold italic H subscript bold 3 bold comma bold space bold C subscript bold 6 bold H subscript bold 5 bold C with bold asterisk times on top bold italic H subscript bold 2 bold comma bold space bold left parenthesis bold italic C bold italic H subscript bold 3 bold right parenthesis subscript bold 2 bold space bold C with bold asterisk times on top bold italic H bold comma bold space bold left parenthesis bold C subscript bold 6 bold H subscript bold 5 bold right parenthesis subscript bold 3 bold space bold C with bold asterisk times on top bold comma bold space bold left parenthesis bold italic C bold italic H subscript bold 3 stack bold right parenthesis subscript bold 3 bold C with bold asterisk times on top

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Multiple Choice Questions

42.

Which of the following carbocation is most stable?

$left parenthesis CH subscript 3 right parenthesis subscript 3 straight C. straight C with plus on top straight H subscript 2$
$left parenthesis CH subscript 3 right parenthesis subscript 3 space straight C with plus on top$
$CH subscript 3 CH subscript 2 straight C with plus on top straight H subscript 2$
$CH subscript 3 straight C with plus on top HCH subscript 2 CH subscript 3$

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43.

The reaction
$CH subscript 3 CH subscript 2 straight I space plus space KOH left parenthesis aq right parenthesis space rightwards arrow space space CH subscript 3 CH subscript 2 OH space plus space KI$
is classified as