Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas NEET2020ChemistryChemical EquilibriumPractice

The value of l o g 10 K for a reaction A ⇌ B is (Given: Δ r H o 298 K = - 54.07 k J m o l - 1 , Δ r S o 298 K = 10 J K - 1 m o l - 1 and R = 8.314 J K - 1 m o l - 1 ; 2.303 × 8.314 × 298 = 5705 )

Options

  1. A90
  2. B100
  3. C5
  4. D10

Correct answer

D. 10

Step-by-step solution

Δ G o = Δ H o - T Δ S o = - 54.07 × 1000 – 298 × 10 = - 57050 J m o l - 1 Δ G ° = - 2.303 R T l o g 10 K - 57050 = - 5705 l o g 10 K l o g 10 K = 10

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 NTA Abhyas NEET PYQs