The boiling point of methanol, water and dimethyl ether are respectively 65 0 C , 100 0 C a n d 34.5 0 C . Which of the following best explains these wide variations in b.p.? Options: A . &nbspThe molecular mass increases from water (18) to methanol (32) to diethyl ether (74) B . &nbspThe extent of H-bonding decreases from water to methanol while it is absent in ether C . &nbspThe extent of intramolecular H-bonding decreases from ether to methanol to water D . &nbspThe density of water is 1.00 g ml−1, methanol 0.7914 g ml−1 and that of diethyl ether is 0.7137 g ml−1

The boiling point of methanol, water and dimethyl ether are respectively 650

Question

The boiling point of methanol, water and dimethyl ether are respectively

65^{0} C, 100^{0} C a n d {34.5}^{0} C

. Which of the following best explains these wide variations in b.p.?

Options:

A . The molecular mass increases from water (18) to methanol (32) to diethyl ether (74)

B . The extent of H-bonding decreases from water to methanol while it is absent in ether

C . The extent of intramolecular H-bonding decreases from ether to methanol to water

D . The density of water is 1.00 g ml−1, methanol 0.7914 g ml−1 and that of diethyl ether is 0.7137 g ml−1

Answer: Option B
:
B
Water has strongest hydrogen bond of the three

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