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What does it mean when we say that a 0.15 M NaCl solution is isotonic with blood, whereas distilled water is hypotonic?
13. Solutions
Osmosis
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Four U tubes each have distilled water in the right arm, a solution in the left arm, and a semipermeable membrane between the arms. If the solute is LiF, which solution is most concentrated?
A
B
C
D
Verified step by step guidance1
Identify the concept of osmosis, which is the movement of water across a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration.
Observe the images of the U tubes. Each tube has a solution on the left side and distilled water on the right side, separated by a semipermeable membrane.
Note the level of liquid in the left arm of each U tube. The higher the liquid level in the left arm compared to the right arm, the more concentrated the solution is.
Compare the liquid levels in the left arms of the U tubes labeled A, B, C, and D. The tube with the highest liquid level in the left arm indicates the most concentrated solution.
Determine which U tube has the highest liquid level in the left arm, indicating the most concentrated LiF solution.
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