Thermodynamics definition chemistry
Thermodynamics as the name concerned with the flow of specific heat and it deals with the relationship between heat and energy or work. But the science of thermodynamics covers the wider field. Thus it applied for studying the different physical and chemical processes.
It also related to the mutual transformation of different kinds of energy change. Thus thermochemistry provides heat change in different kinds of chemical changes.
Thermodynamic and kinetic theory of gases
This based on the three general thermodynamics laws. These laws are not derived. Thus these laws are given from the long experience with natural phenomena. But these thermodynamic relations tested experimentally form long decades. Thermodynamics not based on hypotheses like the kinetic energy of gases.
For example in kinetic theory, we consider the pressure of a gas as a measurement of the impact of the molecules on the walls per second. But thermodynamic pressure is a property of a state of a system based on the observation of body whole.
Thus the molecular kinetic theory has been introduced as the supplement in the modern development of the learning chemistry in thermodynamics. This leads to the berth of the new thermodynamics branch known as the law of statistical thermodynamics.
A system defined as an object or quantity of matter. Thus the system is the part of the universe separated from the rest par of the universe. All the other parts of the universe are called surroundings.
- Thus a system is said to be isolated when it is not capable to exchange heat or matter from the surroundings.
- A closed system is one in which energy exchange with surroundings is possible but no mass transfer across the boundary is permitted.
- In an open system, the transfer of both mass and energy across the boundary possible.
The boundary walls also classified into two types
- The diathermal walls
- The adiabatic walls.
Originally published at https://www.tumblr.com on March 15, 2020.