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. Particles of this mixture remain inside a semipermeable membrane. What is it solution, colloid or suspension?
2. Each of the following mixtures is placed in a dialyzing bag that is immersed in distilled water. Which substances will dialyze?
a) NaCl, starch, and amino acids(solution)
b) albumin (colloidal protein), KCl, and glucose
c) urea(solution) and NaCL.
Expert Solution
Here are the answers to your questions:
1.Since the particles of the mixture remains inside the semipermeable membrane, it suggests that the mixture is either colloid or suspension. It is only solution (0.1 to 2 nanometers), which passes through the semipermeable membrane. In case of colloids (2 to 1000 nanometers) and suspension (diameters greater than 1000 nm), the size of particles is large enough to pass through the semipermeable membrane.
2.When placed in a dialyzing bag that is immersed in distilled water, (c) that is, urea (solution) and NaCl will dialyze through the dialysis membrane.
*Starch and albumin (colloida protein) do not dialyze.
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