We are being asked to calculate the osmotic pressure of a 9.3×10−2 M potassium sulfate solution at 306K using the van’t Hoff factor in the table
Osmotic pressure (Π) is given by the equation:
where
i = van't Hoff factor
M = molarity
R = gas constant
T = temperature
Solute | /Expected | /Measured |
Nonelectrolyte | 1 | 1 |
NaCl | 2 | 1.9 |
MgSO4 | 2 | 1.3 |
MgCl2 | 3 | 2.7 |
K2SO4 | 3 | 2.6 |
FeCl3 | 4 | 3.4 |
Calculate the osmotic pressure of a 9.3×10−2 M potassium sulfate solution at 306K.
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