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MEDIUMMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryMole _ Equivalent ConceptAtomic Theory

Which law states that if two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of other element, are in the ratio of small whole number?

A.Avagadro law
B.Law of definite composition
C.Law of conservation of mass✓ Correct
D.Gay Lussac’s law of gaseous volumes
Explanation

Law of multiple proportions. According to this law, if two elements can combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element, are in the ratio of small whole numbers. For example, hydrogen combines with oxygen to form two compounds, namely, wate and hydrogen peroxide. Hydrogen   + Oxygen  → Water 2g              16 g            18g Hydrogen + Oxygen  → Hydrogen peroxide 2g              32 g                      34 g Here, the masses of oxygen (16 g and 32 g) Which combined with a fixed mass of hydrogen (2g) bear a simple ratio i.

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