engineering chemistry MCQ #2146

For the reaction 2A + B ⇌ C, if the initial concentrations of A and B are 2M and 1M respectively, and Kc = 4, what is the equilibrium concentration of C?

engineering chemistry MCQ #2146

  1. Question 1

    Q1. For the reaction 2A + B ⇌ C, if the initial concentrations of A and B are 2M and 1M respectively, and Kc = 4, what is the equilibrium concentration of C?

    • A) 1/2
    • B) 1/3
    • C) 2/3
    • D) 1/5

    Answer: 1/5

    Explanation: Let x be the concentration of C, then Kc = x/((2-2x)²(1-x)) = 4, x = 1/5 is a valid solution