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Consider a solution separated from pure water by a semipermeable membrane that permits the passage of water,
but not solutes. Which statement is false?

a) Osmotic pressure depends upon the size of the solute molecules.

b)Osmosis is the movement of solvent from a region of high solvent concentration to a solution of lower solvent concentration.

c)Osmotic pressure is the pressure that must be applied to the solution to prevent the inflow of water.

d)Osmotic pressure could be eliminated if enough solute were added to the region of pure water.

explanation please thanx

2007-09-11 05:11:54 · 4 answers · asked by Anonymous in Science & Mathematics Chemistry

4 answers

a is definetely false, because it depends on the concentration of water in the solution. Like diffusion water will osmotically permeate a membrane to balance out the water concentrations in and around the membrane.

c sounds wrong too, just because its worded wierd.

2007-09-11 05:17:18 · answer #1 · answered by Phillip R 4 · 1 0

"a" is false. The size or the solute is immaterial to the osmotic pressure. The concentration, however, is important. To make this correct, the statement should read: Osmotic pressure depends on the concentration of the solution.

2007-09-11 05:26:49 · answer #2 · answered by fireguard06 2 · 0 0

a) false - depends on concentration of solute molecules
b) false - movement of solute from a region of high solute concentration to a region of low solute concentration
c) true
d) true - however a state of equilibrium wherein there is no movement of solute is reached when solute concentration is the same between adjoining regions separated by semipermeable membrane

2007-09-11 05:23:30 · answer #3 · answered by Marly 1 · 0 0

d)Osmotic pressure could be eliminated if enough solute were added to the region of pure water.

It cannot be eliminated but can be balanced out.

2007-09-11 05:16:22 · answer #4 · answered by ag_iitkgp 7 · 0 0

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