Verified Solution • 2025–26 Session moderate

QJEEM03Ch7657: JEE Main 2003 Chemistry - Class 11 JEEM03Ch7657 Solution: What volume of hydrogen gas at 273 K and 1 atm pressure will be …

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?

Multiple Choice Options

  • A 67.2 L
  • B 44.8 L
  • C 22.4 L
  • D 89.6 L

Step-by-Step Verified Solution

The reaction is
2BCl3 + 3H2 → 2B + 6HCL

∴ 3 moles of hydrogen produces 2 moles of boron

So 2×10.8 gm = 21.6 gm of boron is produces from 3×22.4 = 67.2 L hydrogen

Related Learning Resources & Exam Preparation

JEE Main PYQ Question Bank
Browse year-wise authentic previous years' questions with solutions
Authentic CBT Mock Tests
Simulate official exam environment with live timer and percentile scoring