Question

For each equilibrium constant, indicate whether you would expect an equilibrium reaction mixture to be dominated by reactants, to be dominated by prod- ucts, or to contain significant amounts of both.

Keq= 0.75
A. reactants dominate at equilibrium
B. products dominate at equilibrium
C. significant amounts of reactants and products

Answer 1

Using the provided information, answer choice C represents this situation, indicating that significant amounts of reactants and products are present at equilibrium for a Keq of 0.75.a

Step-by-step explanation:

The value of the equilibrium constant, Keq, provides insight into the relative amounts of reactants and products in a chemical reaction at equilibrium. For an equilibrium constant Keq = 0.75, this indicates that the constant is less than 1 but not significantly small. Therefore, the reaction mixture will contain significant amounts of both reactants and products at equilibrium. This is supported by the fact that equilibrium mixtures with Keq values in the range of 10³ ≥ K ≥ 10⁻³ contain appreciable amounts of both reactants and products. In this scenario, neither the reactants nor the products are completely dominant, and the system is not driven to completion in either direction.

For an equilibrium constant Keq of 0.75, significant amounts of both reactants and products will be present in the equilibrium mixture, as the value indicates the system is not driven to completion in either direction.