Each of the following mixtures was placed in a dialysis bag like the one shown i

Question

Each of the following mixtures was placed in a dialysis bag like the one shown in the figure below. The bag was immersed in pure water. Which substances will pass through the bag into the surrounding water? NaNO_3 solution and starch (colloid). Urea (small organic molecule), and starch (colloid). Albumin (colloid), KCl solution, and ethyl alcohol solution (small organic molecule). (Select all that apply) the urea molecules the hydrated sodium and nitrate ions the ethyl alcohol molecules the albumin (colloid) the starch (colloid) the hydrated potassium ions and chloride ions none of the above

Explanation / Answer

Dialysis membrane consists of small pores through which small molecules can easily pass, colloids have large size( 1nanometer to 1000 nanometer) hence they cannot pass yhrough them.

a) NNO3 solutioneasily passes throgh dialyzing bag

b) urea easily passes through dialysis bag, because of its small size

the ethyl alchol moecules

the hydrated potassium and chloride ions

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