The osmotic pressure of a 0.82 M HCl solution is 35.9 atm at 18°C.Calculate the van't Hoff factor for HCl at this concentration.
A)1.8
B)17.2
C)1.5
D)2.00

Question

Quizplus · Accepted Answer

The van't Hoff factor (i) can be calculated using the formula for osmotic pressure: π = iMRT. Rearranging for i gives i = π / (MRT). Substituting the given values (π = 35.9 atm, M = 0.82 M, R = 0.0821 L·atm/mol·K, T = 291 K), we find i ≈ 1.8.

The Osmotic Pressure of a 0