The value of universal; Gas Constant 'R' is:
Correct answer: D. 8.314 Jmol-1 K-1
- A. 8.314 Jmol-2K-1
- B. 1.38 Jmol-1 K-2
- C. 1.38 Jmol-1K-1
- D. 8.314 Jmol-1 K-1
Explanation
Explanation: The value of the universal gas constant R depends on the units of pressure, volume, and temperature used. In SI units, the value of R is approximately 8.314Jmol-1K-1.
This question appeared on the UHS MDCAT 2009 paper, which you can sit online with every answer explained.
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About Ideal Gas Equation
The ideal gas equation, PV = nRT, relates pressure, volume, amount and absolute temperature when gas particles are assumed to have negligible volume and no intermolecular forces. Applications include finding molar mass, density or an unknown gas variable, with careful use of Kelvin temperature and consistent units, and comparison with real-gas behaviour.
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