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Which statement correctly identifies the law of reciprocal proportions?

Answer and explanation

Correct answer: It compares mass relationships among three elements

The law of reciprocal proportions involves three elements. Suppose elements A and B combine separately with a fixed mass of element C. The masses of A and B that combine with C are related to the ratio in which A and B combine directly, or to a simple multiple of that ratio. Hence, the key identifying feature is a comparison of mass relationships among three elements, making option A correct. The colour of a compound is unrelated to a quantitative combination law. Temperature comparison belongs to gas behaviour or thermodynamics, not reciprocal proportions. A mixture recipe does not describe fixed chemical combination between elements.

Related tags

ChemistryReciprocal ProportionsChemical LawsLaws Of Chemical CombinationSome Basic Concepts Of ChemistryClass 11 Mcq

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