Organic Chemistry 2

JEE Mains 2015 Sample Questions › Organic Chemistry questions › Organic Chemistry 2

Which amine is the weakest base? Please explain so I can understand..

a. CH3CH2NH2

b. (CH3)2NH

c. C6H5CH2NH2

d. C6H5NH2

e. C6H5CH2NHCH3

#Chemistry #Organic Chemistry

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14 Answers

1

MATRIX ·2009-02-19 08:22:41

no replies...[11][11][11].....

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1

vector ·2009-02-19 08:22:54

ANS d
i think as in d the lone pairs of n r delocalised it is d weakest base

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39

Dr.House ·2009-02-19 08:25:30

@prajith: here is a clue dude, u hvae to consider not only lone pair availability on hydrogen but also the approachability to that lone pair. and also solvation energy of the amine should be considered.

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tapanmast Vora ·2009-02-19 08:25:42

I wud go wid B...

d wud hav bn my 2nd choice...

prajith ans kya hai

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1

MATRIX ·2009-02-19 08:26:36

ya .........i too think so richa.........but was having a confusion.......

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MATRIX ·2009-02-19 08:27:39

tapan i think the answer is d....... correct me if im wrong.......

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tapanmast Vora ·2009-02-19 08:28:11

is the ans D or wat??

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ankit mahapatra ·2009-02-19 08:29:10

Ans :
d) aniline is the weakest base because in this case the electron density present on nitrogen will be donated into the ring so it will be less available to abstract proton

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MATRIX ·2009-02-19 08:29:32

thanks ankit..........

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tapanmast Vora ·2009-02-19 08:29:52

i told B coz Ph has -I effect.....
so basicity decreases....

pata niahi y os ans D?? [2] [7] [12]

wats da source of da question.... r usure on the ans?

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39

Dr.House ·2009-02-19 08:30:52

hey dude, ankit`s explanation is correct one

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MATRIX ·2009-02-19 08:31:53

ya tapan ankit has given the answer.......

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vector ·2009-02-19 08:32:14

hey plz ans my elimination n reaction post...........

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tapanmast Vora ·2009-02-19 08:32:21

yah but here, NH isnt directly attached to the benzene ring.... then how can it b in conjugation?

i may b wrong

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Your Answer

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° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω