Spec/NMR

Question 1

for HNMR, what ppm will a sp³ Carbon atom be located at?

Answer 1

1 ppm

Question 2

for HNMR, what ppm will a C bonded to a π system be located at?

Answer 2

2 ppm

Question 3

for HNMR, what ppm will a C atom bonded to an O atom be located at?

Answer 3

3-4

Question 4

for HNMR, what ppm will a sp² Carbon atom be located at?

(C=C)

Answer 4

5-6

Question 5

for HNMR, what ppm will an aromatic Carbon atom be located at?

Answer 5

7-8 ppm

Question 6

for HNMR, what ppm will an aldehyde Carbon atom be located at?

Answer 6

10

Question 7

for HNMR, what ppm will a caboxylic acid be located at?

Answer 7

11-12 ppm

Question 8

for CNMR, what ppm will a sp³ alkyl C atom be located at?

Answer 8

10-30

Question 9

for CNMR, what ppm will a sp3 alkyl C atom bonded to O/N/X be located at?

Answer 9

50-70

Question 10

for CNMR, what ppm will a sp C atom be located at?

Answer 10

75-90

Question 11

for CNMR, what ppm will a sp² C atom be located at?

Answer 11

100-160

Question 12

for CNMR, what ppm will a ester, amide, carboxyl C=O be located at?

Answer 12

160-180

Question 13

for CNMR, what ppm will a aldehyde or ketone C=O be located at?

Answer 13

190-200

Question 14

For IR, what frequency will you see for O-H and N-H

Answer 14

3400

Question 15

For IR, what frequency will you see for sp C-H

Answer 15

3300

Question 16

For IR, what frequency will you see for sp² C-H

Answer 16

3100-3000

Question 17

For IR, what frequency will you see for sp³ C-H

Answer 17

3000-2850

Question 18

For IR, what frequency will you see for C_=C and C=_N

Answer 18

2100

Question 19

For IR, what frequency will you see for C=O

Answer 19

1700

Question 20

For IR, what frequency will you see for C=C

Answer 20

1600

Question 21

For IR, what frequency will you see for aromatic C-C

Answer 21

1600, 1700

Question 22

Answer 22

Question 23

C NMR

Answer 23