JEE Main 2003 — Some Basic Concepts Of Chemistry Question with Solution
From: AIEEE 2003
Question
What volume of hydrogen gas at 273 K and 1 atm pressure will be consumed in obtaining 21.6 g of elemental boron (atomic mass = 10.8) from the reduction of boron trichloride by hydrogen?
Choose an option
Show full solutionCorrect option: A
Correct answer
A67.2 L
Step-by-step explanation
The reaction is
2BCl3 + 3H2 2B + 6HCL
3 moles of hydrogen produces 2 moles of boron
So 210.8 gm = 21.6 gm of boron is produces from 322.4 = 67.2 L hydrogen
2BCl3 + 3H2 2B + 6HCL
3 moles of hydrogen produces 2 moles of boron
So 210.8 gm = 21.6 gm of boron is produces from 322.4 = 67.2 L hydrogen
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This is a previous-year question from JEE Main 2003, 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.