Final answer:
Osmotic pressure is a colligative property of solutions observed using a semipermeable membrane. It is the pressure applied to prevent the flow of solvent molecules from a region of lower solute concentration to a region of higher solute concentration. The formula used to determine osmotic pressure is π = nRT.
Step-by-step explanation:
Osmotic pressure is a colligative property of solutions that is observed using a semipermeable membrane. It is the pressure applied to prevent the flow of solvent molecules from a region of lower solute concentration to a region of higher solute concentration. The formula used to determine osmotic pressure is π = nRT, where π is the osmotic pressure, n is the molar concentration of solute particles, R is the ideal gas constant, and T is the temperature in Kelvin.