We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byRuby Eveleigh
Modified over 2 years ago
Courtesy of Alzet Osmotic Pumps Pharmaceutics Cancer Treatments Painkillers Agriculture Fertilization of crops Fragrances Air freshener Bug repellant
#1: Semi-permeable membranes and controlled concentrations can create a zero-order rate of diffusion. #2: Polar membranes diffuse polar substances like alcohols at a zero- order rate.
J = mass flux D = diffusion co- efficient dC = C IN - C OUT dX = thickness of membrane
(Ra) 2 = 4(δ D1 -δ D2 ) 2 + (δ P1 -δ P2 ) 2 + (δ H1 - δ H2 ) 2 RED = Ra/Ro δ D = London dispersion forces δ P = Dipole-dipole interactions δ H = Hydrogen bonding Ra = Solubility difference Ro = Solubility radius RED = Relative energy difference
Courtesy of Vernier Software & Technology
Citric AcidAscorbic Acid Acetylsalicylic Acid 147.76 g/100 mL33.O g/100 mL0.30 g/100 mL
OSMOSIS OSMOSIS: The diffusion of water through a selectively permeable membrane SELECTIVELY PERMEABLE: some substances pass like water and others do.
Let’s look at one example involving osmosis. Osmosis is the diffusion of water across a semi permeable membrane such as a cell membrane. A semi permeable.
Intermolecular Forces of Attraction. Intermolecular Forces Forces that attract molecules to other molecules. These include: Forces that attract molecules.
Structure and Function of Organelles cell (plasma) membrane semi-permeable membrane which regulates the passage of substances into and out of the cell.
Movement Through the Membrane Mr. Luis A. Velázquez Biology.
Polarity and Intermolecular Forces. NonpolarPolar Diatomic molecules.
Intermolecular Forces of Attraction. CA Standards Students know the atoms and molecules in liquids move in a random pattern relative to one another because.
Chemistry Semester Review: Compounds: Intermolecular forces: Intermolecular forces: 1.London (dispersion) forces; dipole-dipole forces; hydrogen bonds.
CHEM 100 Chemistry and Society Winter Quarter 2008 SCCC Lecture 38 In all the hurry to revise don’t forget to do a good job on lab reports….
8.8: Limits of Solubility When we dissolve a solid in some liquid, what is actually happening? –Take glucose added to water H-bonding between water molecules.
3.4 Intermolecular Forces. Intermolecular Forces These forces determine the following physical properties within chemicals: –State –Melting point –Boling.
Intermolecular Forces The fantastic four!. ION-DIPOLE FORCE.
Moving Cellular Material Chapter 2, Lesson 3. Membranes Control the movement of materials in and out of cell. – Semipermeable – only certain substances.
Cell Membrane & Transport Fluid mosaic model - Lipids, proteins & carbohydrates Membrane trafficking - Passive Transport - Active Transport - Bulk.
Review: - ionic, polar, very soluble HCO HHH Na + Cl - ( - ) ( + ) - covalent, polar, very soluble HCO HHH ( - ) ( + ) C HH - covalent, polar, soluble.
Unit 4: Solutions & Solubility
Solutions Chapter 6 What Are Solutions? Solution: homogeneous mixture of 2 or more substances Solution: homogeneous mixture of 2 or more substances –Solid,
Homeostasis Living things respond to their environment Cells maintain homeostasis by controlling the movement of substances across the cell membrane.
Intermolecular Forces Notes. Intermolecular Forces o Intermolecular Forces: attraction between molecules o Much weaker than chemical bonds.
© 2017 SlidePlayer.com Inc. All rights reserved.