Which of the following could be a correct set of units for the ideal gas law constant, R?
A) L/mol
B) L·atm/mol
C) L·atm/mol·K
D) L·atm·mol·K

Question

Quizplus · Accepted Answer

The ideal gas law is PV = nRT, where P is the pressure in atmospheres, V is the volume in liters, n is the number of moles, T is the temperature in Kelvin, and R is the ideal gas constant. Rearranging the equation, R = (PV)/(nT). Therefore, the units of R must be (pressure x volume) / (moles x temperature). Choice A is incorrect because it includes only volume and moles, but not pressure or temperature. Choice B is incorrect because it includes pressure and volume, but not temperature. Choice D is incorrect because it includes all four quantities, but not divided by each other. Choice C is the correct answer because it includes all four quantities and they are all properly divided by each other.

Which of the Following Could Be a Correct Set of Units