Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Most Important Selected Qs for JEE AdvancedChemistryThermodynamics (C)

Calculate heat of atomization of furan in KJmol -1 using the data Heats of atomization of C, H, O are 717, 218, 249 KJmol -1 each. Fill your answer dividing by 100

Correct answer

40.51

Step-by-step solution

Writing the formation reaction 4 C s + 4 H g + O g → C 4 H 4 O g Δ H f ∘ = - 6 2 · 0 = Σ reac BE - Σ product BE Σ product BE = Σ reac BE + 6 2 · 0 = 4 × 7 1 7 + 4 × 2 1 8 + 2 4 9 + 6 2 = 2 8 6 8 + 8 7 2 + 2 4 9 + 6 2 = 4 0 5 1 KJ mol - 1 Σ product BE is heat of atomization of product into isolated gaseous atoms. Hence answer is 40.51

Practice Thermodynamics (C) on Quantrex Academy →

More from Thermodynamics (C)

An ideal gas ( 0.5 mol), initially at 2 bar pressure, is compressed at a constant temperature of 600 K in two steps: first, against a constant external pressure of P bar ( 2 < P < 2026List-I contains various physical/chemical processes, and List-II contains combinations of changes in enthalpy ( H ) and entropy ( S ). Match each entry in List-I to the appropriate 2026Consider the reaction 2 H ₂ S (g) + 3 O ₂(g) 2 H ₂ O (l) + 2 SO ₂(g) The magnitude of enthalpy change for the reaction in kJ mol ⁻¹ is ________. (Nearest integer) Given: _fH^ ( H ₂ 2026Match List - I with List - II. Given V₁ and V₂ are initial and final volumes respectively. List - I (Isothermal process) List - II (Expression) A. Reversible expansion I. q = 0 B. 2026Arrange the following isothermal processes in order of the magnitude of the work ( p - V ) involved between states 1 and 2 . A. Expansion in single stage w_A B. Expansion in multi 2026Consider the reaction X Y at 300 K. If H^ and K are 28.40 kJ mol ⁻¹ and 1.8 10⁻⁷ at the same temperature, then the magnitude of S^ for the reaction in J K ⁻¹ mol ⁻¹ is _______. (Ne 2026Consider the following data for the reaction X₂(g) + Y₂(g) 2XY(g) at 600 K . The _r G^ (in kJ mol ⁻¹ ) for the reaction is : Compound _f H^ _ 600K (kJ mol ⁻¹ ) S^ _ 600K (J mol ⁻¹ 2026The correct order of molar heat capacities measured at 298 K and 1 bar is : 2026 Full Thermodynamics (C) list All Most Important Selected Qs for JEE Advanced PYQs