Choose the pair of substances that are most likely to form a homogeneous solution.
$\mathrm{NH}_{2} \mathrm{CH}_{3}$ and $\mathrm{CH}_{4}$
$\mathrm{NF}_{3}$ and $\mathrm{SO}_{2}$
$\mathrm{CO}_{ ext {and }} \mathrm{C}_{6} \mathrm{H}_{6}$
$\mathrm{CCl}_{4}$ and $\mathrm{SCl}_{2}$

Question

Choose the pair of substances that are most likely to form a homogeneous solution.
$\mathrm{NH}_{2} \mathrm{CH}_{3}$ and $\mathrm{CH}_{4}$
$\mathrm{NF}_{3}$ and $\mathrm{SO}_{2}$
$\mathrm{CO}_{	ext {and }} \mathrm{C}_{6} \mathrm{H}_{6}$
$\mathrm{CCl}_{4}$ and $\mathrm{SCl}_{2}$

Accepted Answer

∻Solution∻ ‖ 1 ⋮ **Identify the principle of solubility**: The solubility of substances in one another is largely determined by the principle "like dissolves like," which means that polar substances are more likely to dissolve in polar solvents, and nonpolar substances are more likely to dissolve in nonpolar solvents. ‖ ‖ 2 ⋮ **Analyze the given pairs**: - $NH_2CH_3$ (methylamine) is a polar molecule due to the presence of a nitrogen atom with a lone pair of electrons, which can form hydrogen bonds. - $CH_4$ (methane) is a nonpolar molecule because it is symmetrical and the electronegativity difference between carbon and hydrogen is not significant. - $NF_3$ (nitrogen trifluoride) is a polar molecule due to the electronegativity difference between nitrogen and fluorine. - $SO_2$ (sulfur dioxide) is a polar molecule because of its bent shape and the electronegativity difference between sulfur and oxygen. - $CO$ (carbon monoxide) is a polar molecule due to the electronegativity difference between carbon and oxygen. - $C_6H_6$ (benzene) is a nonpolar molecule because it is symmetrical and has delocalized pi electrons. - $CCl_4$ (carbon tetrachloride) is a nonpolar molecule because it is symmetrical and the electronegativity difference between carbon and chlorine is not enough to make it polar. - $SCl_2$ (sulfur dichloride) is a polar molecule due to its bent shape and the electronegativity difference between sulfur and chlorine. ‖ ‖ 3 ⋮ **Determine the most likely homogeneous solution**: Based on the principle of "like dissolves like," the pair that consists of one polar and one nonpolar substance is less likely to form a homogeneous solution compared to a pair where both substances are either polar or nonpolar. Therefore, we look for a pair where both substances share similar polarity. ‖ ‖ 4 ⋮ **Select the correct pair**: The pair $CCl_4$ and $SCl_2$ consists of one nonpolar and one polar molecule, so they are less likely to form a homogeneous solution. The pair $NH_2CH_3$ and $CH_4$ also consists of one polar and one nonpolar molecule, making them less likely to mix homogeneously. The pair $NF_3$ and $SO_2$ both consist of polar molecules, making them the most likely to form a homogeneous solution. The pair $CO$ and $C_6H_6$ consists of one polar and one nonpolar molecule, so they are less likely to form a homogeneous solution. ‖ ∻Answer∻ ⚹ $NF_3$ and $SO_2$ ⚹ ∻Key Concept∻ ⚹ "Like dissolves like" principle ⚹ ∻Explanation∻ ⚹ $NF_3$ and $SO_2$ are both polar molecules and are therefore most likely to form a homogeneous solution. ⚹◊Which of the given pairs exhibit similar intermolecular forces that would favor the formation of a homogeneous solution?⍭ Generate me a similar question◊

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