Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main202528 Jan 2025Morning ShiftChemistrySome Basic Concepts of ChemistryActual

Quantitative analysis of an organic compound (X) shows following % composition. C : 14.5 % Cl : 64.46% H: 1.8 % (Empirical formula mass of the compound ( X ) is __________ 10⁻¹ (Given molar mass in g mol ⁻¹ of C : 12, H : 1, O : 16, Cl : 35.5 )

Correct answer

0

Step-by-step solution

array ll:cccl & C & Cl & H & O & %mass & 14.5 & 64.46 & 1.8 & 19.24 array Molar ratio 14.5 12 64.46 35.5 1.8 1 19.24 16 aligned & array ccccc & 1.2 & 1.8 & 1.8 & 1.2 Minimum & 2 & 3 & 3 & 2 array & integral ratio aligned aligned & Empiricial formula = C ₂ H ₃ Cl ₃ O ₂ & Mass =165.5 & Mass =1655 10⁻¹ aligned

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