Product (chemistry)
Encyclopedia
Product are formed during chemical reaction
s as reagents are consumed. Products have lower energy than the reagents and are produced during the reaction according to the second law of thermodynamics
. The released energy comes from changes in chemical bonds between atoms in reagent molecules and may be given off in the form of heat or light. Products are formed as the chemical reaction progresses toward chemical equilibrium
at a certain reaction rate
, which depends on the reagents and environmental conditions.
Depending on the relative amounts of the reagents and the equilibrium of the reaction, the terms "reagent" and "product" may also overlap.
Chemical reaction
A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Chemical reactions can be either spontaneous, requiring no input of energy, or non-spontaneous, typically following the input of some type of energy, such as heat, light or electricity...
s as reagents are consumed. Products have lower energy than the reagents and are produced during the reaction according to the second law of thermodynamics
Second law of thermodynamics
The second law of thermodynamics is an expression of the tendency that over time, differences in temperature, pressure, and chemical potential equilibrate in an isolated physical system. From the state of thermodynamic equilibrium, the law deduced the principle of the increase of entropy and...
. The released energy comes from changes in chemical bonds between atoms in reagent molecules and may be given off in the form of heat or light. Products are formed as the chemical reaction progresses toward chemical equilibrium
Chemical equilibrium
In a chemical reaction, chemical equilibrium is the state in which the concentrations of the reactants and products have not yet changed with time. It occurs only in reversible reactions, and not in irreversible reactions. Usually, this state results when the forward reaction proceeds at the same...
at a certain reaction rate
Reaction rate
The reaction rate or speed of reaction for a reactant or product in a particular reaction is intuitively defined as how fast or slow a reaction takes place...
, which depends on the reagents and environmental conditions.
Depending on the relative amounts of the reagents and the equilibrium of the reaction, the terms "reagent" and "product" may also overlap.
See also
- ReagentReagentA reagent is a "substance or compound that is added to a system in order to bring about a chemical reaction, or added to see if a reaction occurs." Although the terms reactant and reagent are often used interchangeably, a reactant is less specifically a "substance that is consumed in the course of...
s or reactants - Chemical reactionChemical reactionA chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Chemical reactions can be either spontaneous, requiring no input of energy, or non-spontaneous, typically following the input of some type of energy, such as heat, light or electricity...
- Chemical equilibriumChemical equilibriumIn a chemical reaction, chemical equilibrium is the state in which the concentrations of the reactants and products have not yet changed with time. It occurs only in reversible reactions, and not in irreversible reactions. Usually, this state results when the forward reaction proceeds at the same...
- Second law of thermodynamicsSecond law of thermodynamicsThe second law of thermodynamics is an expression of the tendency that over time, differences in temperature, pressure, and chemical potential equilibrate in an isolated physical system. From the state of thermodynamic equilibrium, the law deduced the principle of the increase of entropy and...