No. of moles of boron =10.821.6=2 for BCl3 ∴1 mole of Boron =3 mole of Cl ∴2 mole of Boron =6 mole of Cl H2+Cl2→2HCI ⇒3 moles of Hydrogen is required =3×22.4=67.2 Litre
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 reducti on of boron trichloride by hydrogen?
Held on 30 Apr 2003 · Verified 6 Jul 2026.
67.2 L
44.8 L
22.4 L
89.6 L
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