Urea is a chemical frequently used in biochemistry labs to study the stability of proteins. Urea acts as a denaturing agent that can disrupt the native structure of proteins. What is the osmotic pressure of a 1.57 M solution of aqueous urea at 300 K? Solution osmotic pressure (?) is given by the following formula : ? = cRT where c = concentration of solute T = temperature R = universal gas constant = 0.0821 L atm K -1 given : T = 300 K and c = 1.57 M So, ? = cRT = (1.57 mol L -1 ) X (0.0821 L atm K -1 mol -1 ) X (300 K ) = 38.6691 atm Osmotic pressure of a 1.57 M solution of aqueous urea at 300 K is 38.6691 atm . .