Which of the following is true regarding osmotic pressure?
a. Osmotic pressure depends on the number of particles in solution.
b. Osmotic pressure varies inversely with temperature.
c. Osmotic pressure is highest in dilute solu-tions.
d. Osmotic pressure varies inversely with to-nicity.
ANS: A
Osmotic pressure depends on the number of particles in solution but not on their charge or iden-tity. A 2% solution has twice the osmotic pressure of a 1% solution under similar pressures. For a given amount of solute, osmotic pressure is inversely proportional to the volume of solvent. Os-motic pressure varies directly with temperature, increasing by 1/273 for each 1° C.
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