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The osmotic pressure (Π) of a solution is related to the molarity of the solution:
i = van’t Hoff factor
M = molarity of the solution (in M or mol/L)
R = gas constant (0.08206 atm • L/mol • K)
T = temperature
M3X2 is an electrolyte that dissociates in the following manner:
M3X2 → 3 M2+ + 2 X3–
The dissociation formed a total of 5 ions which means i = 5.
Calculate Molarity M3X2:
M = 2.1581x10-4 M = x (solubility)
A solution saturated with a salt of the type M3X2 has an osmotic pressure of 2.64 X 10-2 atm at 25°C. Calculate the Ksp value for the salt, assuming ideal behavior.
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Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl 2nd Edition practice problems.