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QJEEM19Chbec5: JEE Main 2019 Chemistry - Class 11 JEEM19Chbec5 Solution: In a chemical reaction, the initial concentration of B was 1.5…

In a chemical reaction,

JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Chemical Equilibrium Question 74 English
the initial concentration of B was 1.5 times of the concentration of A, but the equilibrium concentrations of A and B were found to be equal. The equilibrium constant (K) for the aforesaid chemical reaction is -

Multiple Choice Options

  • A 16
  • B 1
  • C `1/4
  • D 4

Step-by-Step Verified Solution

JEE Main 2019 (Online) 12th January Morning Slot Chemistry - Chemical Equilibrium Question 74 English Explanation

At equilibrium [A] = [B]

⇒ a - x = 1.5a - 2x

⇒ x = 0.5a

Kc = [C]2[D][A][B]2

= (a)2(0.5a)(0.5a)(0.5a)2 = 4

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