# What is the equation of law of corresponding states?

## What is the equation of law of corresponding states?

the compressibility factor at the critical condition; (c) the law of corresponding states. [ a = 4 ℜ 2 T c 2 p c e 2 ; b = ℜ T c p c e 2 ; z c = 0.2707 ; p R = T R ( 2 v R − 1 ) exp ( 2 ( 1 − 1 v R T R ) ) ]

### What is law of corresponding states in thermodynamics?

According to van der Waals, the theorem of corresponding states (or principle/law of corresponding states) indicates that all fluids, when compared at the same reduced temperature and reduced pressure, have approximately the same compressibility factor and all deviate from ideal gas behavior to about the same degree.

What is A and B in Wonderwall equation?

The constant ‘a’ gives the idea of the magnitude of attractive forces between the molecules of the gas and ‘b’ is the measure of effective volume occupied by the gas molecules in the van der Waals equation. It is also called co-volume or excluded volume.

What is the reduced equation of state?

an equation relating the reduced parameters of a thermodynamic equilibrium system, that is, the parameters of pressure, volume, and temperature, defined as the ratio of their values to the critical state.

## What is relationship between CP and CV?

Cp is the term used to represent the molar heat capacity of a substance at constant pressure whereas, Cv is the term for molar heat capacity at constant volume. Thus, these two parameters define the molar heat capacity at varying pressure and temperature.

### What do you mean by corresponding state?

: the states of two or more substances in which their pressures are proportional to their critical pressures, their temperatures to their critical temperatures, and their volumes to their critical volumes.

What is the unit of A in the Wonderwall equation?

We get the required unit of Van der waal’s constant $a = Atm \times litr{e^2}mo{l^{ – 2}}$. Therefore, option D is the correct answer. Note: The Van der waal’s constant a and b are characteristic properties of a specific real gas.

What is equation of state give equation of state for perfect gas?

For ideal gas, the equation of states is PV equal to nRT. It is a result of combination of Boyle’s and Charles’s laws. Boyle’s law states that at constant temperature, pressure is inversely proportional to volume. The combination gives the equation of states, PV equal to nRT.

## What is Boyle point of a gas?

Boyle’s temperature or Boyle point is the temperature at which a real gas starts behaving like an ideal gas over a particular range of pressure. A graph is plotted between compressibility factor Z and pressure P.

### What is Cp CV called?

The Cp/Cv ratio is also called the heat capacity ratio. In thermodynamics, the heat capacity ratio is known as the adiabatic index. Cp/Cv ratio is defined as the ratio of two specific heat capacities. (i.e.) Heat Capacity ratio = Cp/Cv = Heat capacity at constant pressure/ Heat capacity at constant volume.