Question

question 5 (1 point)
water is a polar solvent and hexane (c₆h₁₄) is a nonpolar solvent. which of the following correctly describes the solubility of the solute?
octane (nonpolar), soluble in water
mineral oil (nonpolar), soluble in water
ccl₄ (nonpolar), soluble in water
nahco₃, soluble in water
cacl₂, soluble in hexane

Explanation:

• The principle "like dissolves like" is used. Polar solvents dissolve polar or ionic solutes, and non - polar solvents dissolve non - polar solutes.
• Water is polar. Octane, mineral oil, and \(CCl_4\) are non - polar. So they are not soluble in water.
• \(NaHCO_3\) is an ionic compound (has polar nature due to ion - dipole interactions). Ionic compounds (and polar compounds) tend to be soluble in polar solvents like water.
• \(CaCl_2\) is ionic. Hexane is non - polar. Ionic compounds are not soluble in non - polar solvents.

Answer:

\(NaHCO_3\), soluble in water