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-R Effect

The dipole mo...

Question

The dipole moment is the highest for

A

Trans-2-butene

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B

1, 3-Dimethylbenzene

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C

Acetophenone

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D

Ethanol

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Solution

The correct option is C
Acetophenone

The dipole moment is the highest for Acetophenone.

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Similar questions

There are some alkenes are given as follow:

2-methyl propene, cis-2-butene, trans-2-butene

Which of the following is the correct order for increasing order of reactivity for acid catalyzed hydration?

1) trans-2-butene< cis-2-butene < 2-methyl propene

2) cis-2-butene< trans-2-butene < 2-methyl propene

3) 2-methyl propene < trans-2-butene < cis-2-butene

Q. Assertion: 1-Butene has less dipole moment than 1-butyne.
Reason : 1-Butyne has more s-character.

Q. What is the order of stability for
I. 1-butene; II cis-2-butene; III. trans-2-butene?

Q. What is the characteristic property common to both cis-2-butene , trans-2- butene?

a) boiling point. b) dipole moment
c)heat of hydrogenation. d) product of hydrogenation

What do options c and d mean?

Q. (i) Cis - 2 - butene

\to

trans-2-butene,

△ H_{1}

(ii) Cis - 2 - butene

\to

△ H_{2}

(iii) Trans-2-butene is more stable than cis - 2 - butene.
(iv) Enthalpy of combustion of 1 - butene,

△ H = - 649.8 k c a l / m o l

9 △ H_{1} + 5 △ H_{2} = 0

(vi) Enthalpy of combustion of trans 2 - butene,

△ H = - 647.0 k c a l / m o l .

△ H_{1}

△ H_{2}

in kcal/mol are

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