JEE Main 2015ChemistrySome Basic Concepts of ChemistryMediumMCQ

JEE Main 2015 — Some Basic Concepts of Chemistry Question with Solution

JEE Main 2015 (10 Apr Online)

Question

A sample of a hydrate of barium chloride weighing 61 g was heated until all the water of hydration is removed. The dried sample weighed 52 g. The formula of the hydrated salt is: (atomic mass, Ba = 137 amu, Cl = 35.5 amu)

Choose an option

Show full solutionCorrect option: D
Correct answer
DBaCl2⋅2H2O

Step-by-step explanation

BaCl2⋅xH2O→BaCl2+x H2O 

(137+2×35.5+18x)

=208+18x  g/mole

208 + 18 x208=6152

10816+936 x=12688

936 x=1872

x=2

Formula is BaCl2⋅2H2O

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About this question

This is a previous-year question from JEE Main 2015, covering the Some Basic Concepts of Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.