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When H₂O and H₂O₂ are compared, which law is most suitable?

Answer and explanation

Correct answer: Law of multiple proportions

The governing concept is the law of multiple proportions. H₂O and H₂O₂ are two different compounds formed from the same elements, hydrogen and oxygen. If the mass of hydrogen is kept constant, the masses of oxygen that combine with it are in a simple whole-number ratio: in water the oxygen-to-hydrogen mass ratio is 8:1, while in hydrogen peroxide it is 16:1. The oxygen masses are therefore in the ratio 8:16, or 1:2. This directly satisfies the law of multiple proportions, so option A is correct. The law of definite proportions applies to one pure compound at a time, conservation of mass concerns total reactant and product mass, and the pressure law concerns gases rather than composition of these compounds.

Related tags

Multiple ProportionsH2OH2O2Laws Of Chemical CombinationSome Basic Concepts Of ChemistryChemistryClass 11 Mcq

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