JEE Main & Advanced
Chemistry
Equilibrium / साम्यावस्था
Question Bank
Law of equilibrium and Equilibrium constant
question_answer
A + B ⇌ C + D. If finally the concentration of A and B are both equal but at equilibrium concentration of D will be twice of that of A then what will be the equilibrium constant of reaction. [BHU 2005]
A) 4 / 9
B) 9 / 4
C) 1 / 9
D) 4
Correct Answer:
D
Solution :
A + B ⇌ C + D x x 0 0 2x 2x \[{{K}_{c}}=\frac{[C][D]}{[A][B]}=\frac{2x\,.\,2x}{x\,.\,x}=4\]