What is the osmotic pressure of a 1.81 M aqueous solution of urea at 24.5°C?
The osmotic pressure of a 1.81 M aqueous solution of urea at 24.5°C is approximately 3.63 atm.
Calculation of Osmotic Pressure
Osmotic Pressure Formula: π = MRT
Osmotic pressure (π) is calculated using the formula where M is the molarity of the solution, R is the ideal gas constant (0.0821 L·atm/(mol·K)), and T is the temperature in Kelvin.
First, we convert the temperature from Celsius to Kelvin:
T = 24.5 + 273.15 = 297.65 K
Then, we calculate the osmotic pressure:
π = (1.81 M) * (0.0821 L·atm/(mol·K)) * (297.65 K) = 3.63 atm
Therefore, the osmotic pressure of the 1.81 M aqueous solution of urea at 24.5°C is approximately 3.63 atm. Osmotic pressure is an important property used to understand the behavior of solutions and their effects on biological systems.