Chemistry - Chemical Equilibrium Question with Solution | TestHub
Statement 1: For the reaction A(g) ⇌ B(g) with Kc = 2, equilibrium concentrations are [A] = 1 M and [B] = 2 M. If 1 M of A and 1 M of B are now added, the reaction must move in the forward direction.
Statement 2: If the amount of reactant added to a system at equilibrium is more than the amount of product added, the reaction always moves in the forward direction.
Options:
Answer:
Solution:
After the addition, the concentrations are [A] = 2 M and [B] = 3 M. The reaction quotient Q is calculated as Q = ([B])/([A]) = (3)/(2) = 1.5.
Given that Q < Kc = 2, the reaction will proceed in the forward direction. Therefore, Statement 1 is correct.
The direction of a reaction is determined by comparing the reaction quotient Q with the equilibrium constant Kc, not by which reactant or product amount is larger. Thus, Statement 2 is incorrect.
Statement 1 is correct and Statement 2 is incorrect, which corresponds to option (c).
