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Which option has all clues in correct order?

Answer and explanation

Correct answer: Total mass → conservation of mass; pure compound → definite proportions; many compounds → multiple proportions; gas volumes → Gay-Lussac

Option A gives the correct sequence. The law of conservation of mass concerns equality of total mass before and after a reaction. The law of definite proportions applies to the fixed mass ratio of elements in a pure compound. The law of multiple proportions applies when the same two elements form more than one compound. Gay-Lussac’s law of gaseous volumes concerns volumes of reacting gases. In option B, total mass is incorrectly linked to Gay-Lussac’s law. Exam tip: match the clue words—total mass, pure compound, many compounds, and gas volumes—with their respective laws.

Related tags

ChemistryClass 11Chemical Combination LawsConservation Of MassDefinite ProportionsMultiple ProportionsGay Lussac LawLaws Of Chemical Combination

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