Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main2003ChemistrySome Basic Concepts of ChemistryActual

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?

Options

  1. A67.2 ~L
  2. B44.8 ~L
  3. C22.4 ~L
  4. D89.6 ~L

Correct answer

A. 67.2 ~L

Step-by-step solution

No. of moles of boron = 21.6 10.8 =2 for BCl ₃ 1 mole of Boron =3 mole of Cl 2 mole of Boron =6 mole of Cl H ₂+ Cl ₂ 2 HCI 3 moles of Hydrogen is required =3 22.4=67.2 Litre

Practice Some Basic Concepts of Chemistry on Quantrex Academy →

More from Some Basic Concepts of Chemistry

Match List-I with List-II. List-I Mass of substance List-II Number of atoms A. 1.8 mg water I. 2 10⁻⁴ N_A B. 9.8 mg sulphuric acid II. 1.5 10⁻⁴ N_A C. 1.8 mg carbon III. 3 10⁻⁴ N_A 2026Which of the following contain the same number of atoms ? (Given : Molar mass in g mol ⁻¹ of H, He, O and S are 1, 4, 16 and 32 respectively) A. 2 g of O₂ gas B. 4 g of SO₂ gas C. 2026An oxide of iron contains 69.9 % iron, its empirical formula, is: (Given: Molar mass of Fe and O are 56 and 16 g mol ⁻¹ respectively.) 2026What volume of hydrogen gas at STP would be liberated by action of 50 mL of H₂SO₄ of 50 % purity (density = 1.3 g mL ⁻¹ ) on 20 g of zinc ? Given : Molar mass of H, O, S, Zn are 1, 2026How many grams of residue is obtained by heating 2.76 g of silver carbonate? (Given: Molar mass of C, O and Ag are 12 , 16 and 108 g mol ⁻¹ respectively) 2026The correct order of total number of atoms present in (A) 2 moles of cyclohexane (B) 684 g of sucrose (C) 90.8 L of dihydrogen at STP is: 2026Number of moles and number of molecules in 1.4187 L of SO₂ at STP respectively are: 2026The ratio of mass percentage (w/w) of C : H in a hydrocarbon is 12 : 1 . It has two carbon atoms. The weight (in g) of CO₂(g) formed when 3.38 g of this hydrocarbon is completely b 2026 Full Some Basic Concepts of Chemistry list All JEE Main PYQs