An aqueous mixture containing starch (a colloid), NaCl, glucose, and albumin (a colloid)is placed in a dialyzing bag and immersed in distilled water. Which of the following correctly describes the location of the indicated
Substance after dialysis?
A)albumin inside and outside
B)starch inside and outside
C)albumin, inside
D)water inside only
E)starch outside

Question

Quizplus · Accepted Answer

Dialysis involves the separation of solutes based on their size and charge. In this case, the dialyzing bag is permeable to water and small solutes like NaCl and glucose but not to larger molecules like starch and albumin. When the bag is placed in distilled water, water will flow into the bag and solutes like NaCl and glucose will diffuse out of the bag into the surrounding water. However, since starch and albumin cannot pass through the bag, they will remain inside the bag. Therefore, the correct answer is choice C, which states that albumin will be inside the bag and not outside.

An Aqueous Mixture Containing Starch (A Colloid), NaCl, Glucose, and Albumin