Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main20231 Feb 2023Evening ShiftChemistryChemical EquilibriumActual

The effect of addition of helium gas to the following reaction in equilibrium state at constant volume, is : PCI 5 (   g ) ⇌ PCl 3 (   g ) + Cl 2 (   g )

Options

  1. Athe equilibrium will shift in the forward direction and more of Cl 2 and PCl 3 gases will be produced.
  2. Bthe equilibrium will go backward due to suppression of dissociation of PCl 5 .
  3. Chelium will deactivate PCl 5 and reaction will stop.
  4. Daddition of helium will not affect the equilibrium.

Correct answer

D. addition of helium will not affect the equilibrium.

Step-by-step solution

PCI 5 (   g ) ⇌ PCl 3 (   g ) + Cl 2 (   g ) In the above reaction vessel, when helium(an inert gas) is added following cases can happen for isobaric and isochoric processes respectively: Case 1 : At constant P - volume will increase so reaction will shift in forward direction then answer will be A Case 2 : At constant volume no change in active mass so reaction will not shift in any direction then answer will be D. Thus, at constant volume, addition of helium will not have any impact on the eq

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 JEE Main PYQs