Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2017ChemistryChemical EquilibriumActual

For the reaction, H ₂+ I ₂ 2 HI , K =47.6 . If the initial number of moles of each reactant and product is 1 mole then at equilibrium

Options

  1. A[ I ₂ ]= [ H ₂ ], [ I ₂ ]>[ HI ]
  2. B[ I ₂ ]= [ H ₂ ], [ I ₂ ] < [ HI ]
  3. C[ I ₂ ] < [ H ₂ ], [ I ₂ ]=[ HI ]
  4. D[ I ₂ ]> [ H ₂ ], [ I ₂ ]=[ HI ]

Correct answer

B. [ I ₂ ]= [ H ₂ ], [ I ₂ ] < [ HI ]

Step-by-step solution

For the given reaction, K= [ HI ]^2 [ H ₂ ] [ I ₂ ] As 1 mole of H ₂ reacts with 1 mole of I ₂ , even at equilibrium, [ H ₂ ]= [ I ₂ ] Hence, K= [ HI ]^2 [ I ₂ ]^2 or K = [ HI ] [ I ₂ ] = 47.6 i.e., [ HI ]> [ I ₂ ]

Practice Chemical Equilibrium on Quantrex Academy →

More from Chemical Equilibrium

For which of the following solids does solubility decrease with an increase in temperature? 2026Given below are certain reactions. Identify the reaction for which K_p K_c : 2026Higher yield of NO in N ₂( ~g )+ O ₂( ~g ) 2 NO ( g ) can be obtained at [ H of the reaction =+180.7 ~kJ ~mol ⁻¹ ] A. higher temperature B. lower temperature C. higher concentratio 2025For the reaction A ( g ) 2 ~B ( ~g ) , the backward reaction rate constant is higher than the forward reaction rate constant by a factor of 2500 , at 1000 K . [Given : R =0.0831 ~L 2025Consider the following reaction in a sealed vessel at equilibrium with concentrations of N ₂=3.0 10⁻³ M , O ₂=4.2 10⁻³ M and NO =2.8 10⁻³ M . 2 NO _ ( g ) N _ 2( ~g ) + O _ 2( ~g ) 2024For the reaction 2 ~A B + C , K _ C =4 10⁻³ . At a given time, the composition of reaction mixture is: [ A ]=[ B ]=[ C ]=2 10⁻³ M . Then, which of the following is correct? 2024For the reaction in equilibrium N ₂( ~g )+3 H ₂( ~g ) 2 NH ₃( ~g ), H =- Q Reaction is favoured in forward direction by: 2024In which of the following equilibria, K _ p and K _ c are NOT equal? 2024 Full Chemical Equilibrium list All NEET PYQs