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Equilibrium Constant Formula:
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The equilibrium constant (Keq) is a fundamental concept in chemistry that quantifies the ratio of product concentrations to reactant concentrations at chemical equilibrium. It provides crucial information about the position of equilibrium and the extent of a chemical reaction.
The calculator uses the equilibrium constant formula:
Where:
Explanation: The equilibrium constant expresses the relationship between the concentrations of products and reactants when a chemical reaction has reached equilibrium. A Keq > 1 favors products, while Keq < 1 favors reactants.
Details: Calculating the equilibrium constant is essential for predicting reaction direction, understanding reaction spontaneity, determining yield optimization, and designing chemical processes in industrial applications.
Tips: Enter product and reactant concentrations in moles per liter (M). Both values must be positive, and reactant concentration must be greater than zero. Ensure concentrations are measured at equilibrium conditions.
Q1: What does Keq > 1 indicate?
A: A Keq value greater than 1 indicates that the reaction favors product formation at equilibrium, meaning products are more abundant than reactants.
Q2: What does Keq < 1 indicate?
A: A Keq value less than 1 indicates that the reaction favors reactants at equilibrium, meaning reactants are more abundant than products.
Q3: Can Keq be negative?
A: No, equilibrium constants are always positive values since concentrations cannot be negative. The value ranges from 0 to infinity.
Q4: What factors affect Keq?
A: Temperature is the primary factor that affects the equilibrium constant. Changes in concentration, pressure, or catalyst addition do not change Keq.
Q5: How is Keq different from Q?
A: Keq is calculated at equilibrium conditions, while Q (reaction quotient) is calculated at any point during the reaction. Comparing Q to Keq predicts reaction direction.