In which type of solution does the solvent obey Raoult's law while the solute adheres to Henry's law?

The correct answer identifies an ideal-dilute solution as the scenario in which the solvent behavior aligns with Raoult's law, while the solute follows Henry's law.

In ideal-dilute solutions, the solvent is present in a relatively high concentration compared to the solute. Under these conditions, the behavior of the solvent approaches ideality, which is described by Raoult's law; this law states that the vapor pressure of the solvent in the solution is directly proportional to its mole fraction.

On the other hand, the solute, being present in much smaller amounts, interacts with the solvent in a manner that can deviate from ideal behavior. Henry's law applies here, describing how the solubility of a gas (solute) in a liquid (solvent) is proportional to the pressure of that gas above the liquid, which ties in with its non-ideality in low concentrations. Specifically, Henry’s law constant reflects how the solute behaves differently from how it would behave in an ideal solution since interactions between solute and solvent may not exhibit ideal mixing.

This understanding is integral in physical chemistry, especially in context where solvent interactions dominate, while solute effects can be negligible or need a different model to describe their