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6. Which ONE of these would have the lowest boiling point? a) (CHi)N b) CH CH NH

ID: 695108 • Letter: 6

Question

6. Which ONE of these would have the lowest boiling point? a) (CHi)N b) CH CH NHCH primary amine has how many peaks in the region of 3200-3400 cm" in the IR? a) zerob) one c) two d) three 8. Draw the enol form of acetophenone 9. A compound has the formula CllO, with all the following characteristics: a) It has a band at 1700 cm in the IR. What does this tell you? b) It gives a negative 2,4-DNP test. What does this tell you? c) Its' H NMR consists of: 7.0-75 (S H, multiplet) lo 2.2 (3 H, singlet) What is the structure of this compound? 10. Show the steps necessary to carry out this transformation. CHy CH TO NO2

Explanation / Answer

Ans 6 : a) (CH3)3N

The boiling point of amines can be explained on th basis of intermolecular association of molecules present between the molecules as a result of hydrogen bonding. Since tertiary amine has no free hydrogen available for the hydrogen bonding , it has the lowest boiling point of all others.