The correct value of the general gas constant R is:
Correct answer: D. 8.314 x 10^7 erg mol-1 K-1
- A. 8.314 atm dm3 mol-1 K-1
- B. 0.0821 J mol-1 K-1
- C. 62.4 torr cm3 mol-1 K-1
- D. 8.314 x 10^7 erg mol-1 K-1
Explanation
The value of the gas constant R depends on the units used. The value 8.314 x 10⁷ erg·mol⁻¹·K⁻¹ is a correct, though less common, representation of R. Option A has the wrong units for that value, and options B and C have incorrect values for their units.
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About Gases
Gas behaviour is explained through the kinetic molecular theory and the relationships among pressure, volume and temperature. Work includes STP, Boyle's and Charles's laws, absolute zero, the ideal gas equation, and the distinction between ideal and real gases, especially the effects of intermolecular forces and molecular volume.
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