1. What is the Equilibrium Constant?

The equilibrium constant (K) is a measure of the ratio of product concentrations to reactant concentrations at equilibrium, with each concentration raised to the power of its stoichiometric coefficient in the balanced chemical equation.

2. How Does the Calculator Work?

The calculator uses the equilibrium constant formula:

Where:

• \( [products] \) — Concentration of products at equilibrium (mol/L)
• \( [reactants] \) — Concentration of reactants at equilibrium (mol/L)

Explanation: The equilibrium constant quantifies the position of equilibrium, with larger values indicating more products at equilibrium.

3. Importance of Equilibrium Constant

Details: The equilibrium constant is fundamental in chemical thermodynamics and kinetics, helping predict reaction direction and extent under given conditions.

4. Using the Calculator

Tips: Enter equilibrium concentrations of products and reactants in mol/L. Reactant concentration must be greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What does a large K value mean?
A: A large K (>>1) indicates the reaction favors product formation at equilibrium.

Q2: What does a small K value mean?
A: A small K (<<1) indicates the reaction favors reactants at equilibrium.

Q3: How does temperature affect K?
A: K is temperature-dependent. For endothermic reactions, K increases with temperature; for exothermic reactions, K decreases.

Q4: What are the units of K?
A: The equilibrium constant is dimensionless, as it's a ratio of concentrations.

Q5: How is K different from Q?
A: Q is the reaction quotient at any point in time, while K is specifically at equilibrium.