In: Chemistry
The osmotic pressure, Π, of a solution of glucose is 34.2 atm . Find the molarity of the solution at 298 K. Express the molarity to three significant figures and include the appropriate units.
We know that osmotic pressure, Π = CRT
Where C = concentration = molarity = ?
R = gas constant = 0.0821 L.atm / (mol-K)
T = Temperature = 298 K
Π = osmotic pressure = 34.2 atm
Plug the values we get C = Π / (RT)
= 34.2 / ( 0.0821 x 298)
= 1.39 M
Therefore the molarity of the solution is 1.39 M