Exam 1 - pKa Values

Question 1

H2SO4, HCl/HBr/HI (Alkyl halides)

Answer 1

-10

Question 2

H30+ (any positively charged O ion)

Answer 2

-2

Question 3

Carboxyl group (COOH)

Answer 3

4

Question 4

Positively charged amine group (NHx+) with resonance

Answer 4

5

Question 5

Alcohol (OH) with resonance & positively charged amine (NHx+)

Answer 5

10

Question 6

Alcohol (OH) no resonance

Answer 6

16

Question 7

Ketone (R-C=O-R

Answer 7

20

Question 8

Alkyne (CtripleC)

Answer 8

25

Question 9

Amines (NHx)

Answer 9

38

Question 10

Phenyl (Double bonds around ring)

Answer 10

44

Question 11

Tetrahedral Carbon (CH4/C’s in a ring)

Answer 11

50