a flask contains two compartments (A and B) with equal volumes of solution separated by a...
a flask contains two compartments (A and B) with equal volumes of solution separated by a semipermeable membrane. compartment a is filled with 2.0 M NaCl and B is filled with 2.0M glucose. What happens to the volume of the compartments over time? Briefly explain your reasoning
Homework Answers
One NaCl has one Na+ particle and one Cl- particle, that is total two particles per one NaCl. So in compartment A 2.0 M NaCl actually has 2.0 M Na+ and 2.0M Cl-, that is total of 2.0+2.0 = 4.0 M solute particles.
But one glucose has only one solute particle. It can't split like NaCl. Thus compartment B has only 2.0 M concentration of solute particles.
Now the semipermiable membrane allows movement of only solvent water molecules across it, which move from a region of high solvent concentration (low solute concentration), that is compartment B, to a region of low solvent concentration ( high solute concentration) that is compartment A.
Hence over time volume of compartment A increases and that of compartment B decreases.
Comment if still any doubt.
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