Which of the following equations represents the ideal gas law?

The ideal gas law is a fundamental equation in chemistry that relates the pressure (P), volume (V), temperature (T), and the number of moles (n) of a gas through a constant (R), known as the ideal gas constant. This law can be succinctly expressed as PV = nRT, which encapsulates how these variables interact under ideal conditions where the gas behaves according to certain assumptions (like negligible intermolecular forces and that the volume of the gas molecules themselves is insignificant compared to the volume of the container).

In this context, option C is the correct representation because it accurately follows the standard formulation of the ideal gas law without any alterations or additional terms that would misrepresent the relationships among the variables. Each part of the equation has a specific unit and contributes to a clear understanding of how pressure and volume are affected by the amount of gas present (in moles) and its temperature.

The other options introduce either extra terms or a rearrangement that strays from the accepted form of the equation, thus failing to maintain the integrity of the ideal gas law as it is conventionally presented in scientific literature. This clarity and precision are essential in the study and application of gas laws in chemistry.