Q. 9.71 - An Introduction to General, Organic, and Biological Chemistry

Question

Each of the following mixtures is placed in a dialyzing bag and immersed in distilled water. Which substances will be found outside the bag in the distilled water?

a. $NaCl$ solution

b. starch solution (colloid) and alanine (an amino acid) solution

c. $NaCl$ solution and starch solution (colloid)

d. urea solution

Step-by-Step Solution

Answer

(part a) Outside the bag, in the distilled water, a chemical called $NaCl$ will be identified.

(part b) Outside the dialyzing membrane, there'll be no starch colloid.

(part c) In the distilled water, $NaCl$ will be located outside the bag.

(part d) Outside the bag, in the pure water, urea will be found.

Step 1: Introduction (part a)

Water that has had contaminants such as soluble substances and colloidal particles removed by one or more distillation operations; chemically pure water.

Step 2: Given data (Part a).

The drug will be discovered in distilled water outside the bag.

(part a)$NaCl$ solution.

Step 3: Explanation (Part a).

(part a) The sodium and chloride ions can easily pass through the tractor trailer membrane, hence the $NaCl$ compound will be found outside the bag in pure water.

Step 4: Given data (Part b).

The drug will be discovered in distilled water outside the bag.

(part b) A solution of starch (colloid) and alanine (an amino acid).

Step 5: Explanation (Part b).

(part b) Outside the dehydrate membrane, no starch colloid will be found. Alanine is an amino acid, hence it will be located outside the semipermeable membrane because it can easily seep through the separated by a semipermeable membrane's [pore size].

Step 6: Given data (Part c).

The drug will be discovered in distilled water outside the bag.

(part c) $NaCl$ solution and starch solution (colloid).

Step 7: Explanation (Part c).

(part c) $NaCl$ could be produced in distilled water outside of the bag, but starch colloid cannot be discovered from outside dialyzing membrane. Instead, they cause water to flow through the dialyzing membrane.

Step 8: Given data (Part d).

The drug will be discovered in distilled water outside the bag.

(part d) urea solution.

Step 9: Explanation (part d).

(part d) Urea will be discovered in the filtered water outside the bag.