24. Dalton's law of constant composition applies to1 pointsolutionsheterogeneous mixturescompoundshomogeneous mixturessolids

Understanding Dalton's Law of Constant Composition

Dalton's Law of Constant Composition states that a chemical compound always contains its component elements in fixed ratio by mass, regardless of the amount or source of the compound.

Analyzing the Options

1. Solutions: These are homogeneous mixtures, and Dalton's Law does not apply here in terms of fixed ratios of components.

2. Heterogeneous Mixtures: These consist of different substances or phases, so the composition can vary. Dalton's Law does not apply.

3. Compounds: This is where Dalton's Law applies, as compounds have a specific composition.

4. Homogeneous Mixtures: Similar to solutions, these do not adhere to a constant composition as they may contain varying amounts of substances.

5. Solids: This is a broad category and doesn't specifically speak to composition.

Final Answer

Dalton's law of constant composition applies to compounds.