Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Most Important Selected Qs for JEE AdvancedChemistryChemical Equilibrium

A mixture of I ₂ vapours and H ₂( ~g ) kept in a closed container and heated to a temperature T . After certain time the content of I ₂ decreased by 5 0 % compared with that of the starting mixture. The resulting mixture has a composition of 30 volume % of I ₂, 10 volume % of H ₂ and rest is HI . Select correct statement(s).

Options

  1. AInitial mixture had a volume composition of 60 % I ₂ and 40 % H ₂
  2. BIf volume of H ₂ content decreased by 40 % compared with that of initial mixture then composition of HI in the
  3. CInitial mixture had equal moles of H ₂ and I ₂
  4. DIf reaction goes to completion the volume % of I ₂ in final mixture would be 20

Correct answer

D. If reaction goes to completion the volume % of I ₂ in final mixture would be 20

Step-by-step solution

H ₂( ~g )+ I ₂( ~g ) 2 HI ( ~g ) To get 6 0 parts HI , 30 parts of H ₂ and 30 parts of I ₂ should have been reacted. Initial composition should be I ₂ H ₂ aligned & 30+30=60 % & 10+30=40 % aligned

Practice Chemical Equilibrium on Quantrex Academy →

More from Chemical Equilibrium

Consider the following reactions in which all the reactants and products are present in gaseous state 2xy x₂ + y₂ K₁ = 2.5 10^5 xy + 1 2 z₂ xyz K₂ = 5 10⁻³ The value of K₃ for the 2026Solid carbon, CaO and CaCO₃ are mixed and allowed to attain equilibrium at T K. CaCO ₃(s) CaO (s) + CO ₂(g) K_ p₁ = 0.08 atm C (s) + CO ₂(g) 2 CO (g) K_ p₂ = 2 atm The partial pres 2026In a closed flask at 600 K, one mole of X₂ Y₄ (g) attains equilibrium as given below : X ₂ Y ₄(g) 2 XY ₂(g) At equilibrium, 75 % X₂ Y₄ (g) was dissociated and the total pressure is 2026One mole each of He and A(g) are taken in a 10 L closed flask and heated to 400 K to establish the following equilibrium. A(g) B(g) . K_c for this reaction at 400 K is 4.0 . The pa 2026The reaction A(g) B(g) + C(g) was initiated with the amount ' a ' of A(g) . At equilibrium it is found that the amount of A(g) remaining is (a - x) at a total pressure of p . The e 2026The values of pressure equilibrium constant recorded at different temperatures for the following equilibrium reaction have been given below A(g) B(g) + C(g) 1 T ( K ⁻¹) ₁₀ K_p 0.05 2026For the following reaction at 50° C and at 2 atm pressure, 2N₂O₅(g) 2N₂O₄(g)+O₂(g) N₂O₅ is 50 % dissociated. The magnitude of standard free energy change at this temperature is x . 2026At T(K) , the equilibrium constant of A₂(g) + B₂(g) C(g) is 2.7 10⁻⁵ . What is the equilibrium constant for 1 3 A₂(g) + 1 3 B₂(g) 1 3 C(g) at the same temperature? 2026 Full Chemical Equilibrium list All Most Important Selected Qs for JEE Advanced PYQs