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The equation of state of an ideal gas which is a good approximation to real gases at sufficiently high temperatures and low pressures; that is, PV = RT, where P is the pressure, V is the volume per mole of gas, T is the temperature, and R is the gas constant. The Ideal Gas Law (General Gas Equation) is the equation of state of a hypothetical ideal gas.

Ideal Gas Law

Table of Contents:

**Formula**

**Gas Equation: PV = nRT**

**Where,**

P = pressure,

V = volume,

n = moles of gas,

T = temperature,

R = 8.314 J K^{-1} mol^{-1}, ideal gas constant.

__Example__:

Calculate the Volume of gas through Ideal Gas Law equation.

Temperature = 20 K

Pressure = 30 kPa

Moles of Gas = 2.50 moles

__Solution__:

**Apply Formula:**

Gas Equation: PV = nRT

**Volume = 55.43 L**