Question

What is the reaction quotient (Q) for the following chemical reaction at 25°C, if the initial concentrations of A, B, and C are 0.2 M, 1.0 M, and 0.5 M, respectively?2A + 3B ↔ 4C

Answer 1

The reaction quotient  Q  is calculated using the initial concentrations of the reactants and products in the reaction. For the given reaction:2A + 3B  4CThe expression for Q is:Q = [C]^4 /  [A]^2 * [B]^3 Using the initial concentrations provided:[A] = 0.2 M[B] = 1.0 M[C] = 0.5 MPlug these values into the Q expression:Q =  0.5 ^4 /   0.2 ^2 *  1.0 ^3 Q =  0.0625  /  0.04 * 1 Q = 0.0625 / 0.04Q = 1.5625So, the reaction quotient  Q  for the given reaction at 25C with the initial concentrations provided is 1.5625.