What does the molar concentration (M) variable represent in the basic van't Hoff equation ($ p = MRT$)?

Answer

The molar concentration of the solute

The basic van't Hoff equation shows osmotic pressure is directly proportional to the molar concentration (M) of the solute, absolute temperature (T), and the gas constant (R).

What does the molar concentration (M) variable represent in the basic van't Hoff equation ($
p = MRT$)?
solutionpressuremembraneosmosis