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  • Which of the following substances is expected to have the lowest boiling point?Option: 1 <img alt="\begin{aligned} & \mathrm{CO}_2 \\ \end{aligne

Which of the following substances is expected to have the lowest boiling point?

Option: 1

\begin{aligned} & \mathrm{CO}_2 \\ \end{aligned}


Option: 2

\mathrm{SO}_2 \\


Option: 3

\mathrm{H}_2 \mathrm{O} \\


Option: 4

\mathrm{H}_2 \mathrm{S}


Answers (1)

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\mathrm{CO_{2}} (carbon dioxide) is a small, nonpolar molecule with only London forces as its intermolecular forces. It has the lowest boiling point among the given options. \mathrm{SO_{2}} and \mathrm{H_{2}S} exhibit dipole-dipole interactions, while \mathrm{H_{2}O} shows strong hydrogen bonding, resulting in higher boiling points for these compounds compared to \mathrm{CO_{2}}.

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