N containing compounds and Basicity

Multiple Choice

Which Nitrogen containing compound is the most basic?

• Diethylamine

• Methylamine

• Ammonia

• Aniline

Multiple Choice

Which of the compounds is most basic?

• ammonia

• ethylamine

• p-bromoaniline

• imidazole

Multiple Choice

Use your knowledge of inductive effects and basicity of amines to identify the compounds which are more basic than ammonia.

• None are more basic than ammonia.

• C only

• B and C only

• A, B and C

Multiple Choice

Which statement is correct?

• A is more basic because the the lone pair is more available for donation due to the 1 group with +I.

• A is more basic because the the lone pair is least available for donation due to the 1 group with +I.

• B is more basic because the the lone pair is more available for donation due to the 2 groups with +I.

• B is more basic because the the lone pair is more available for donation due to the 2 groups with -I.

Multiple Choice

Which amine is the least basic?

• A

• B

• C

• D

Multiple Choice

Which of the amines are less basic than ammonia?

• Q, R and S only

• R and S only

• T only

• All

Multiple Choice

List amines in order from least basic to most basic.

• N L M

• M L N

• L M N

• N M L

Multiple Choice

Which is the least basic?

• Q

• R

• S

• T

Multiple Choice

Which amine has the lone pair on the N atom, most available for donation to a proton?

• A

• B

• C

• A and B

Multiple Choice

Place in order of increasing basic strength (most basic last).

• A B C

• A C B

• B C A

• C A B

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-NO₂ has a –I so it draws e- density towards itself therefore lone pair is less available for donation than in C

-CH₃ has a +I so it pushes e- density away from itself therefore lone pair is more available for donation than in C​

Multiple Choice

Which amine has the lone pair on the N atom, most available for donation to a proton?

• X

• Y

• Z

• X and Y

Multiple Choice

Place in order of increasing basic strength (most basic last).

• Y X Z

• Y Z X

• X Z Y

• Z X Y

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Increasing electronegativity increases the –I in the molecule making the lone pair less available for donation.

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