Which of the following units for volume and pressure respectively would be used in conjunction with a universal gas constant of 8.314J/K/mol?Atomi QuestionA(Choice A)L, atmB(Choice B)m3, kPaC(Choice C)L, kPaD(Choice D)m3, atm
Question
Which of the following units for volume and pressure respectively would be used in conjunction with a universal gas constant of 8.314J/K/mol?Atomi QuestionA(Choice A)L, atmB(Choice B)m3, kPaC(Choice C)L, kPaD(Choice D)m3, atm
Solution
The universal gas constant (R) has a value of 8.314 J/(K*mol). The units of this constant are energy per temperature increment per amount of substance. In SI units, energy is measured in Joules, temperature in Kelvin, and amount of substance in moles.
Therefore, the volume and pressure units that would be used in conjunction with this constant should be in SI units as well.
Looking at the choices:
A) L, atm - These are not SI units. B) m3, kPa - These are SI units. C) L, kPa - L is not an SI unit. D) m3, atm - atm is not an SI unit.
So, the correct answer is B) m3, kPa.
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