Answer:
Osmotic pressure is 0.014 atm
Explanation:
Formula for osmotic pressure is π = M . R . T
where π is the osmotic pressure (atm)
M → Molarity (mol/L)
R → Universal constant of ideal gases (0.082 L.atm/mol.K)
T → Absolute temperature (T°C + 273)
With the data given, let's determine the molarity of aspirin in the solution
First of all, we convert the mass to g
44.3 mg . 1 g / 1000 mg = 0.0443 g
Afterwards we convert the mass (g) in moles
Aspirin molar mass = 216 g/mol
0.0443g . 1 mol / 216 g = 2.05×10⁻⁴ mol
Molarity is mol/L so → 2.05×10⁻⁴ mol / 0.358 L = 5.73×10⁻⁴M
T° → 25°C + 273 = 298K
Let's replace the data in the formula
π = 5.73×10⁻⁴M . 0.082 L.atm/mol.K . 298K
π = 0.014 atm
