The table lists data for two substances with similar molar masses and a third…

CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding

Problem

The table lists data for two substances with similar molar masses and a third substance whose boiling point is to be estimated.

Substance	Molar mass (g mol $^{-1}$ )	Dipole moment (D)	Normal boiling point ( $^{\rm o}$ C)
Acetone	58	2.9	56
Propanal	58	2.7	49
Isopropanol	60	1.7	?

Which of the following is the most reasonable estimate for the normal boiling point of isopropanol? (a)

60^{\circ}\text{C}

(b)

100^{\circ}\text{C}

(c)

82^{\circ}\text{C}

(d)

70^{\circ}\text{C}