Which of the following statements are true and which are false? (a) The equilibrium constant can never be a negative number. (b) In reactions that we draw with a single-headed arrow, the equilibrium constant has a value that is very close to zero.

Key Concepts

Equilibrium Constant

The equilibrium constant (K) is a numerical value that expresses the ratio of the concentrations of products to reactants at equilibrium for a given reaction at a specific temperature. It is always a positive value because it is derived from concentrations, which cannot be negative. A K value greater than one indicates that products are favored, while a value less than one indicates that reactants are favored.

Single-Headed Arrow in Reactions

A single-headed arrow in a chemical equation indicates a reaction that goes to completion, meaning that the reactants are converted entirely into products without any significant reverse reaction. In such cases, the equilibrium constant is typically very large, not close to zero, as the products dominate the reaction mixture. This contrasts with reversible reactions, which are represented with double-headed arrows.

True/False Statements in Chemistry

Evaluating true or false statements in chemistry often requires a solid understanding of fundamental principles and definitions. In this context, recognizing the nature of equilibrium constants and the implications of reaction arrows is essential. Misinterpretations can lead to incorrect conclusions, so careful analysis of the statements based on established chemical concepts is crucial.