Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated September 2025
Definition
The reaction quotient, Q, measures the relative amounts of products and reactants present during a reaction at any given time. Q is used to determine which direction a reaction will shift to reach equilibrium.
Related terms
Le Chatelier's Principle: This principle states that if stress is applied to a system at equilibrium, the system will adjust in order to restore equilibrium.
This is the ratio of concentrations of products and reactants at equilibrium. It's like the "perfect recipe" for our reaction.
Gibbs Free Energy (โG): This term tells us whether a reaction can occur spontaneously. If โG is negative, the reaction can happen on its own without any added energy!