Consider two solutions separated by a semipermeable membrane, as shown in the il

Question

Consider two solutions separated by a semipermeable membrane, as shown in the illustration to the right. The membrane allows the passage of small molecules and ions, but not large molecules like polysaccharides or proteins. Solution A contains a 10% solution composed of glucose and the protein albumin dissolved in water. Solution B contains a 5% solution of NaCl in water. Indicate whether each substance in the system would Solution A Solution EB flow into Solution A, Solution B, or neither. a Water b NaCI c Albumirn d Glucose All about Solution Lab 15

Explanation / Answer

Let us calculate concentration of each solution.

Solution A: 10 grams of glucose+ albumin

Wt of glucose (10)/ M.wt. of glucose (180) = 0.05555

Solution B: 5 grams of sodium hydroxide

5/ 40 = 0.125

A) water flows from low concentration area to high concentration area ( osmosis process: solution A to solution B)

B) NaCl : flows from solution B from solution A(Diffusion)

C) Albumin : will not flow

D) Glucose: flows from solution A to B

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