MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryChemical EquilibriumPrevious Year Questions
In the reaction, AB (g) A(g) + B(g) at 30ºC, Kp for the dissociation equilibrium is 2.56 × 10–2 atm. If the total pressure at equilibrium is 1 atm, then the percentage dissociation of AB is (KERELA CEE 2011)
A.87%
B.13%
C.43.5%
D.16%✓ Correct
Explanation
The given reaction is: (g) (g) AB A B(g) 2 2 p 2 2 2 2 α p K = =2.56×10 1 α 1 2.56 10 1 0.16 16% x >> x >> Hence, the correct answer is option (d)