Lab 5 Diffusion and Osmosis PDF

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diffusion and osmosis...

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Lab 5: Diffusion and Osmosis Solution ● Solution: solute and solvent ○ Solute: particles dissolved in solution ○ Solvent: dissolving agent ■ Water is universal solvent ○ Concentration of solution: percent of solute ■ 30% sucrose solution ● 30% sucrose (solute) ● 70% water (solvent) Diffusion ●

Passive transport ○ Requires no energy ● Movement of solute from high solute concentration to low solute concentration Factor that affect the rate of diffusion ● Time ● Temperature ● Size of molecules ● Concentration Tonicity ● Relative solute concentrations ○ Hypertonic: higher conc. ○ Hypotonic: lower conc. ○ Isotonic: equal conc. Osmosis ● Type of diffusion (passive transport) ● Movement of water from low solute (high water) concentration to high solute (low water) concentration across a selectively permeable membrane ● Occurs towards hypertonic solution...