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Question: what does R stand for in thermodynamics...

what does R stand for in thermodynamics

Answer

Universal Gas Constant or Ideal Gas Constant

Explanation

Solution

In thermodynamics, especially in the context of the ideal gas law ( PV=nRTPV = nRT ), 'R' stands for the Universal Gas Constant or Ideal Gas Constant.

It is a physical constant that relates the energy scale to the temperature scale, and it appears in many fundamental equations, including the ideal gas law. Its value depends on the units used, common values include:

  • R=8.314 J mol−1 K−1R = 8.314 \text{ J mol}^{-1}\text{ K}^{-1}
  • R=0.0821 L atm mol−1 K−1R = 0.0821 \text{ L atm mol}^{-1}\text{ K}^{-1}
  • R=1.987 cal mol−1 K−1R = 1.987 \text{ cal mol}^{-1}\text{ K}^{-1}