For the reaction A + B 2C, the equilibrium concentrations are [A] = 0.2 mol/L, [B] = 0.2 mol/L and [C] = 0.4 mol/L. What is ?

Answer and explanation

Correct answer: A. 4

  1. Step 1: .
  2. Step 2: .
Answer
4.
Why not the others: 10: the concentration of C is not squared. 0.25: the expression is inverted. 20: the coefficient is used as a multiplier instead of an exponent.

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