equilibrium
Chemistry
(noun)
The state of a reaction in which the rates of the forward and reverse reactions are the same.
(noun)
The state of a reaction in which the rates of the forward and reverse reactions are equal.
Physics
(noun)
The state of a body at rest or in uniform motion, the resultant of all forces on which is zero.
(noun)
A state of rest or balance due to the equal action of opposing forces.
Biology
(noun)
the condition of a system in which competing influences are balanced, resulting in no net change
Sociology
(noun)
In economics, the point at which supply equals demand and prices cease fluctuating.
Economics
(noun)
The condition of a system where competing forces are in balance.
Examples of equilibrium in the following topics:
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Homogeneous versus Heterogeneous Solution Equilibria
- The equilibrium constants for homogeneous and heterogeneous solutions need to be calculated differently.
- The equilibrium constant K for a given reaction is defined as the ratio of the products of a reaction to the reactants, measured at equilibrium.
- The reaction quotient measured at equilibrium is the equilibrium constant K.
- A heterogeneous equilibrium is a system in which reactants and products are found in two or more phases.
- The equilibrium constant K is simply [Br2], with the concentration of the pure liquid Br2 excluded.
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Equilibrium Constant Expression
- The equilibrium constant is an expression that gives the ratio of reactants and products at equilibrium.
- This constant is known as the equilibrium constant.
- Their activity is 1, so they do not need to be written in the equilibrium constant.
- The progress of an equilibrium reaction can be visualized.
- The equilibrium constant,denoted by K, is the ratio of products to reactants at equilibrium.
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First Condition
- The first condition of equilibrium is that the net force in all directions must be zero.
- For an object to be in equilibrium, it must be experiencing no acceleration.
- The condition $F_\text{net} = 0$ must be true for both static equilibrium, where the object's velocity is zero, and dynamic equilibrium, where the object is moving at a constant velocity.
- Below, the motionless person is in static equilibrium.
- This car is in dynamic equilibrium because it is moving at constant velocity.
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The Zeroth Law of Thermodynamics
- The Zeroth Law of Thermodynamics states that systems in thermal equilibrium are at the same temperature.
- If A and C are in thermal equilibrium, and A and B are in thermal equilibrium, then B and C are in thermal equilibrium.
- Temperature is the quantity that is always the same for all systems in thermal equilibrium with one another.
- The double arrow represents thermal equilibrium between systems.
- If systems A and C are in equilibrium, and systems A and B are in equilibrium, then systems B and C are in equilibrium.
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Macroeconomic Equilibrium
- In economics, the macroeconomic equilibrium is a state where aggregate supply equals aggregate demand.
- In economics, equilibrium is a state where economic forces (supply and demand) are balanced.
- Without any external influences, price and quantity will remain at the equilibrium value .
- The result is the economic equilibrium for that good or service.
- Similar to microeconomic equilibrium, the macroeconomic equilibrium is the point at which the aggregate supply intersects the aggregate demand.
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Reaction Quotients
- If Q < Keq, the reaction will move to the right (in the forward direction) in order to reach equilibrium.
- If Q > Keq, the reaction will move to the left (in the reverse direction) in order to reach equilibrium.
- Eventually, the concentrations become constant; at this point, the reaction is at equilibrium.
- The equilibrium constant, Keq, can be expressed as follows:
- However, most reactions will generally reach equilibrium in a finite period of time.
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The Equilibrium Interest Rate
- In a economy, equilibrium is reached when the supply of money is equal to the demand for money.
- Equilibrium is reached when the supply of money is equal to the demand for money.
- Changes in expectations will therefore affect the equilibrium interest rate.
- In economics, equilibrium is a state where economic forces such as supply and demand are balanced and without external influences, the equilibrium will stay the same.
- Use the concept of market equilibrium to explain changes in the interest rate and money supply
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Equilibrium
- The concentrations of A and B will change over time, until they reach equilibrium.
- This is the point at which the system has reached chemical equilibrium.
- While there are various factors that can increase or decrease the amount of time it takes for a given system to reach equilibrium, the equilibrium position itself is unaffected by these factors.
- We also explain how the concentrations remain constant at equilibrium.
- Chemical equilibrium is akin to two cities connected a bridge.
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Equilibrium
- Equilibrium as "a point from which there is no endogenous ‘tendency to change'
- There are no forces (from buyers or sellers) that will alter the equilibrium price or equilibrium quantity.
- This is a mechanical, static conception of equilibrium.
- General equilibrium is a condition where all agents acting in all markets are in equilibrium at the same time.
- Neoclassical microeconomics tends to focus on partial equilibrium.
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Translational Equilibrium
- This implies two types of possible equilibrium.
- Static or dynamic, these kinds of equilibrium can be categorized as translational equilibrium.
- Examples of translational equilibrium are all around us.
- These six forces are in equilibrium.
- Assess the role each type of equilibrium plays in mechanical devices