AP Lab #1 Osmosis & Diffusion. Lab #1 Diffusion Osmosis Dialysis Tubing is The tubing will allow some molecules to pass through, and others not. Determined.

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Presentation transcript:

AP Lab #1 Osmosis & Diffusion

Lab #1 Diffusion Osmosis Dialysis Tubing is The tubing will allow some molecules to pass through, and others not. Determined by size selectively permeable

Lab #1 Diffusion Osmosis Which way will the water flow?

Explain each…. Hypotonic? Hypertonic?

Once you know the solute concentration, you can calculate solute potential using the following formula: Solute potential (  s) = –iCRT i = the number of particles the molecule will make in water –ex. NaCl = 2 –ex. Sucrose or Glucose = 1 C = molar concentration (from your experimental data graph) R = pressure constant = L bar/mole K T - temp in degrees Kelvin = o C of solution

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