engineering chemistry MCQ #2149

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

engineering chemistry MCQ #2149

  1. Question 1

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

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

    Answer: 1/5

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