Multiple Choice
Which of the following best describes osmosis?
14. Solutions
Osmosis
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Under which condition will osmosis occur across a semipermeable membrane?
A
When the pressure is higher on one side of the membrane
B
When the solute concentrations are equal on both sides of the membrane
C
When there is a concentration gradient of solute across the membrane
D
When the temperature is the same on both sides of the membrane
Verified step by step guidance1
Understand that osmosis is the movement of solvent molecules, typically water, across a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration.
Recognize that a semipermeable membrane allows only certain molecules or ions to pass through it, typically allowing the solvent but not the solute.
Identify that osmosis occurs due to a concentration gradient, which is a difference in solute concentration across the membrane.
Note that osmosis will not occur if the solute concentrations are equal on both sides of the membrane, as there is no concentration gradient to drive the movement of solvent.
Conclude that osmosis will occur when there is a concentration gradient of solute across the membrane, as the solvent will move to balance the solute concentrations on both sides.
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