Chemistry - Mole Concept Question with Solution | TestHub

ChemistryMole ConceptEmpirical and Molecular FormulaMedium2 minQB

ChemistryMediumsingle choice

A compound of X and Y has equal masses of them. If their atomic weights are 30 and 20 respectively. Molecular formula of that compound (its mol. wt. is 120) could be -

Options:

Answer:

Solution:

Question Explanation: Find molecular formula

Concept: This question is based on empirical and molecular formula.

Solution:

Element mass moles ratio simple ratio

X Wgm W/30 1 2

Y Wgm W/20 3/2 3

Formula X₂Y₃ (molecular weight = $2 \times 30 + 3 \times 20 = 120$ )

Final Answer: The correct option is (C).

Stream:JEESubject:ChemistryTopic:Mole ConceptSubtopic:Empirical and Molecular Formula

⏱ 2mℹ️ Source: QB

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