Benzene and Amine amides Amino acids

Question 1

in an amine, the lone pair on the nitrogen can act as a _____

Answer 1

Base (accepts protons)

Question 2

Aliphatic amines can be made using _____

Answer 2

Haloalkanes

Question 3

Aromatic amines are made by _____

Answer 3

Reducing a nitro group on a benzene ring

Question 4

amides are derived from _____

Answer 4

Carboxylic acids

Question 5

amines are derived from _____

Answer 5

Ammonia (NH3)

Question 6

What is the 1st step in reducing nitrobenzene to phenylamine

Answer 6

Tin catalyst + conc HCl

Question 7

What is the 2nd step in reducing nitrobenzene to phenylamine

Answer 7

NaOH

Question 8

what two groups are on amino acids?

Answer 8

Amino (NH2) and Carboxylic acid (COOH)

Question 9

which group on an amino acid reacts with alkai?

Answer 9

Carboxylic acid group, forms salt

Question 10

which group on an amino acid reacts with an acid?

Answer 10

Amino group

Question 11

amoino acids react with alcohols to form _____

Answer 11

Esters (from COOH group)

Question 12

what catalyst is needed to form an ester from a amino acid?

Answer 12

strong acid (H2SO4)

Question 13

How do you test for phenol

Answer 13

Wont react with carbonates (Na2CO3)but will react with bases (NaOH)

Question 14

Why is phenol more reactive than benzene

Answer 14

the lone pair on the O from the OH donates electron to pi system.
More electron dense in one place.

Question 15

why is benzene less reactive than cyclohexene

Answer 15

benzene pi system is less electron dense in one place. hexene is very dense in one place, double bond. induces dipole.

Question 16

why was the kekulè model of benzene wrong

Answer 16

Doesnt react with bromine water (no colour change)

Enthalpy changes of hydrogenation compared to cyclohexene

Bond lengths (double bonds shorter)