Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
COMEDK2021ChemistryChemical Equilibrium

The value of G^ for the phosphorylation of glucose in glycolysis is 13.8 ~kJ / mol . The value of K_ C at 298 ~K is

Options

  1. A7.72 10⁻⁴
  2. B5.62 10⁻⁴
  3. C4.81 10⁻³
  4. D3.81 10⁻³

Correct answer

D. 3.81 10⁻³

Step-by-step solution

The relationship between the standard Gibbs free energy change G^ and the equilibrium constant K_ C is given by the equation G^ = -RT K_ C . Given values are G^ = 13.8 kJ/mol = 13800 J/mol , R = 8.314 J/(mol K) , and T = 298 K . Substituting these values into the equation: 13800 = -(8.314) (298) K_ C K_ C = - 13800 8.314 298 K_ C = - 13800 2477.572 -5.570 K_ C = e^ -5.570 K_ C 3.81 10⁻³ Answer: 3.81 10⁻³

Practice Chemical Equilibrium on Quantrex Academy →

More from Chemical Equilibrium

An equilibrium mixture taken in 2litre vessel of the reaction: 2 SO ₂(g) + O ₂(g) 2 SO ₃(g) has 4 moles of SO ₂ , 3moles of O ₂ and 6moles of SO ₃ then the value of equilibrium con 2026Consider the gaseous equilibrium 2 AB _ 2(g) 2 AB _ (g) + B _ 2(g) The expression relating the degree of dissociation ( ) and equilibrium constant ( K_p ) and total pressure P is: 2026If the equilibrium constant for N _ 2(g) + O _ 2(g) 2 NO _ (g) is 49 The equilibrium constant for the reaction NO _ (g) 1 2 N _ 2(g) + 1 2 O _ 2(g) is __________ 2026For the reversible reaction, N _ 2(g) + 3 H _ 2(g) 2 NH _ 3(g) When the partial pressure is measured in atmosphere, the value of K_p at 500^ C is 1.44 10⁻⁵ . The value of K_c when 2026For the following gaseous reversible reaction: 3 A _ (g) + B _ (g) A ₃ B _ (g) ( _r H = -q kJ ) . The amount of product A ₃ B _ (g) is affected by ____ 2026Calculate G^ for reaction, CH _ 4(g) + H _ 2(g) C ₂ H _ 6(g) ( K_p = 2 10¹⁷ , R = 8.314 JK ⁻¹ mol ⁻¹ ) 2026Find n when 1 mol of each NH _ 3(g) and HCl _ (g) , reacts to form solid NH ₄ Cl . 2026Consider the following chemical reactions performed at identical temperature and volume: Experiment I: X(g) 2 Y(g) Experiment II: X(g) Z(g) The partial pressure of the reactant and 2026 Full Chemical Equilibrium list All COMEDK PYQs