In the equation PV = nRT, how many state variables are present?
Answers
Answer: 3 state variables
Explanation:
A state variable is defined as a measurable physical property that depends on the present state of the system and does not depend on how the state was brought. In other words, a state variable is path independent.
Example:
Here, we are given the Ideal Gas Law equation,
PV = nRT
Where P = pressure, V = volume, T = absolute temperature, n = no. of moles and R = Ideal Gas constant = this is just a number which remains constant depending on the SI units of the other quantities.
In the ideal gas equation, there are 3 state variables which are the pressure, volume and temperature.
These 3 intensive thermodynamic quantities precisely determine the state of n moles of gas.
Answer:
there are 3 state variable... pressure, volume and temperature!