1. Define polarity (1 point): A membrane that allows certain molecules to pass t
ID: 3508978 • Letter: 1
Question
1. Define polarity (1 point): A membrane that allows certain molecules to pass through but not others is known as what kind of a membrane? (1 point) 2. You have a membrane that is permeable to potassium ions and water. The membrane is not permeable to sodium ions. The concentrations are listed below for each molecule on either side of the membrane. Explain the net movement for EACH molecule (3 points). 3. Molecule Potassium ions Sodium lons Water Inside of the Membrane 6M 3M 2ml Outside of the MembraneI 16M 8M 10mL Potassium ions: Sodium lons: Water:Explanation / Answer
1. Polarity:
Polarity is a property of separation of charges leading to a molecule having an electrical dipole or multipole movement.
A molecule is said to be polar if it contains polar bonds & there are unshared electrons on a central atom or bonds from the central atom involve different atoms.
2. A membrane that allows certain molecules to pass through but not others is known as Semipermeable Membrane.
3. Net movement
The net movement of particles is a movement of molecules from a region of high concentration to a region of low concentration.
Because the membrane is not permeable to sodium Ions, there will be no net movement of those molecules.
Potassium and water molecules move & exchange evenly through the membrane
Molecule Outside the membrane Inside the membrane Potassium Ions 11 M 11 M Sodium Ions 8 M 3 M Water 6 mL 6 mLRelated Questions
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