1. AP Lab #1 Osmosis & Diffusion

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

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

4. Explain each…. Hypotonic? Hypertonic?

5. 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 = 0.0831 L bar/mole K T - temp in degrees Kelvin = 273 + o C of solution