Chemical equilibrium
Chemical Equilibrium
Chemical equilibrium (pronunciation: /ˈkɛmɪkəl/ /ˌiːkwɪˈlɪbriəm/) is a state in a chemical reaction where the concentrations of both reactants and products remain constant over time. It is also known as dynamic equilibrium.
Etymology
The term "chemical equilibrium" is derived from the Greek words "chemia" meaning "to pour out" and "iso" meaning "equal", and the Latin word "libra" meaning "balance".
Definition
Chemical equilibrium is achieved when the rate of the forward reaction equals the rate of the reverse reaction. In this state, the concentrations of the reactants and the products remain constant over time, although they are typically not equal to each other.
Related Terms
- Le Chatelier's Principle: This principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change.
- Equilibrium constant (K): This is a measure of the ratio of the concentrations of products to reactants at equilibrium.
- Reaction quotient (Q): This is a measure of the ratio of the concentrations of products to reactants at any point in time.
- Reversible reaction: A reaction where the reactants form products, which in turn react together to give the reactants back.
See Also
External links
- Medical encyclopedia article on Chemical equilibrium
- Wikipedia's article - Chemical equilibrium
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