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Which option is against definite proportions?

Answer and explanation

Correct answer: The mass ratio of elements in a pure compound may be arbitrary

The law of definite proportions states that the constituent elements of a pure compound are always present in a fixed mass ratio. Therefore, the statement that this ratio may be arbitrary in a pure compound contradicts the law. The ratio in a mixture can vary because mixtures are not governed by this law. Exam tip: distinguish carefully between a pure compound and a mixture.

Related tags

Law Of Definite ProportionsChemical CombinationPure CompoundsMixturesMass RatioClass 11 ChemistryLaws Of Chemical CombinationSome Basic Concepts Of Chemistry

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