What two conditions must be present for osmosis to occur?

General
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what two conditions must be present for osmosis to occur?

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Answer:
The two conditions that must be present for osmosis to occur are a semipermeable membrane and a concentration gradient.

  • A semipermeable membrane is necessary for osmosis because it allows the passage of solvent molecules (usually water) but restricts the passage of solute molecules. This membrane selectively allows the movement of water molecules from an area of lower solute concentration to an area of higher solute concentration.

  • A concentration gradient is also required for osmosis to take place. This means that there should be a difference in solute concentration between the two sides of the membrane. The movement of water molecules occurs from the side of lower solute concentration (higher water concentration) to the side of higher solute concentration (lower water concentration) in order to achieve equilibrium.

In summary, for osmosis to occur, there must be a semipermeable membrane and a concentration gradient that allows the movement of water molecules across the membrane.