Chemistry - Mole Concept Question with Solution | TestHub
ChemistryMole ConceptLaws of Chemical CalculationsEasy2 minQB
ChemistryEasysingle choice
The vapour density of a volatile chloride of a metal is 74.6. If the specific heat of the metal is 0.55, the atomic mass of the metal is
Options:
Answer:
A
Solution:
Approx. atomic mass from Dulong-Petit law = 6.4/0.55 = 11.63. Molecular mass of chloride = 2 x 74.6 = 149.2. For MClₙ, atomic mass = 149.2 - 35.5n, so n = (149.2 - 11.63)/35.5 = 3.87 ≈ 4. Exact atomic mass = 149.2 - 4(35.5) = 7.2, which is option (a).
Stream:JEESubject:ChemistryTopic:Mole ConceptSubtopic:Laws of Chemical Calculations
⏱ 2mℹ️ Source: QB
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