Question

Solutions A and B are separated by membrane potentials K but not to Cl-. Solution A is 100 mm KCl, and Solution B is 1 mm KCl. Which of the following statements about Solutions A and B is true?

Options:
a) Solution A has a higher osmolarity than Solution B.
b) Solution B has a higher osmolarity than Solution A.
c) Solutions A and B have the same osmolarity.
d) The osmolarity of Solutions A and B cannot be determined from the information given.

Answer 1

Solution B has a higher osmolarity than Solution A.

Step-by-step explanation:

Tonicity describes how an extracellular solution can change the volume of a cell by affecting osmosis. A solution's tonicity often directly correlates with the osmolarity of the solution.

In this case, Solution B is likely the more concentrated solution because osmolality measures the moles of solute per kilogram of solvent.

Therefore, the correct statement is that Solution B has a higher osmolarity than Solution A.