Question

for each solute, identify the better solvent: water or hexane. water, h₂o hexane, c₆h₁₄ answer bank n₂ nacl ch₃nh₂ so₂ c₃h₈

Explanation:

Step1: Recall solubility rule

Like - dissolves - like. Polar solvents dissolve polar or ionic solutes, non - polar solvents dissolve non - polar solutes.

Step2: Analyze $N_2$

$N_2$ is a non - polar molecule. Hexane is a non - polar solvent. So $N_2$ is more soluble in hexane.

Step3: Analyze $NaCl$

$NaCl$ is an ionic compound. Water is a polar solvent. Ionic compounds are soluble in polar solvents, so $NaCl$ is more soluble in water.

Step4: Analyze $CH_3NH_2$

$CH_3NH_2$ is a polar molecule due to the polar $N - H$ and $C - N$ bonds. Water is a polar solvent, so $CH_3NH_2$ is more soluble in water.

Step5: Analyze $SO_2$

$SO_2$ is a polar molecule because of its bent shape and the difference in electronegativity between $S$ and $O$. Water is a polar solvent, so $SO_2$ is more soluble in water.

Step6: Analyze $C_7H_{16}$

$C_7H_{16}$ is a non - polar hydrocarbon. Hexane is a non - polar solvent, so $C_7H_{16}$ is more soluble in hexane.

Answer:

$N_2$: Hexane
$NaCl$: Water
$CH_3NH_2$: Water
$SO_2$: Water
$C_7H_{16}$: Hexane