1. What is the Equilibrium Constant (Kc)?

The equilibrium constant (Kc) is a ratio of the concentrations of products to reactants 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 equation:

Where:

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

Explanation: The equation shows the ratio of product concentrations to reactant concentrations when a chemical reaction reaches equilibrium.

3. Importance of Kc Calculation

Details: Kc helps predict the direction of a reaction, determine reaction yields, and understand how changing conditions affects equilibrium.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

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

Q2: What does a small Kc value indicate?
A: A small Kc (<1) indicates the reaction favors reactant formation at equilibrium.

Q3: Does Kc have units?
A: Kc is technically dimensionless, but the calculation depends on concentration units being consistent.

Q4: How does temperature affect Kc?
A: Kc is temperature-dependent. Changing temperature alters the equilibrium position and thus the Kc value.

Q5: What's the difference between Kc and Kp?
A: Kc uses concentrations (mol/L) while Kp uses partial pressures (atm) for gas-phase reactions.