BIOMOLECULES AND ENZYMES

BIOLOGY

AMINO ACIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following has the highest boiling point?
A
CH3CH2COOH
B
CH3CH2CH2NH2
C
NH2CH2COOH
D
NH2CH2COCl
Explanation: 

Detailed explanation-1: -Therefore, 1-chloropentane has the highest boiling point.

Detailed explanation-2: -Acetic acid shows the highest boiling point among the given compound due to the intermolecular hydrogen bonding.

Detailed explanation-3: -(c) Both CH3OH and CH3CH2OH can H-bond but CH3CH2OH has more CH bonds for greater dispersion force interactions. Therefore, CH3CH2OH has the higher boiling point.

Detailed explanation-4: -Therefore, CH3CH2CH2NH2 has a higher boiling point and larger Hvap, while N(CH3)3 has a higher vapor pressure. N(CH3)3 exhibits hydrogen bonding while CH3CH2CH2NH2 does not, and N(CH3)3 has a greater surface area to mass ratio, which increases london dispersion forces compared to CH3CH2CH2NH2 .

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