IR Absorption, HNMR, CNMR

Question 1

Two mild to moderately sharp peaks around 3400 in an IR spectrum usually correspond to what?

Answer 1

NH2

Question 2

A wider rounded peak at 3400 in an IR spectrum usually corresponds to what?

Answer 2

O-H

Question 3

A steep, sharp peak around 1700 in an IR usually corresponds to what?

Answer 3

C=O

Question 4

What steps should you follow to use MS and IR to determine molecular structure?

Answer 4

[1] Use the molecular ion to determine possible molecular formulas.
[2] Calculate degrees of unsaturation
[3] Determine which functional groups are present from the IR spectrum