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24 terms

Chem 3

Test 3 -- Ch 7-9
STUDY
PLAY
Pressure
Force acting on specific area
Force/ Area
Standard Temp
0 c or 273 K
Standard pressure
1 atm or 760 mmHg
Molar Volume
1 mol = 22.4 L
1 atm
760 torr or mmHg
Solvent
Substance present in greater amt. (water)
Solute
Substance present in small amt.
Ionic and Polar Solutes
strong solute-solute between (+) (-) ions.
under go Hydration
Non-polar solutes
Like disolves like, non-polar won't interact with polar
Strong electrolytes
Produce ions and conduct electricity.
Dissociate in water to produce (+)(-) ions.
Weak electrolytes
Dissociate slighty
Forms solution of a few ions and mostly undissociated molecules
henrys law
solubility ^ as pressure ^ on a gas.
concentration
amt solute/amt solution
Mass percent
Mass of solute(g)/ Total mass (solvent+solute)(100)
Volume Percent
Volume of solute/ Volume of solution (100)
Mass/volume Percent
Grams of solute/mm of solution (100)
Molarity
moles of solute in sol'n.
Mol solute/L of sol'n.
colloids
Medium sized particles that don't settle in water and can be separated by a semipermeable membrane.
suspensions
Large particles that settle out and have to be mixed to stay suspended can be separated by a filter.
osmosis
H2O flows from a lower solute concentration into a higher solute concentration.
Osmotic Pressure
produced by solute particles, pressure that prevents the flow of additional h2o into more concentrated areas.
Isotonic Solution
same osmotic pressure on RBC's.
5% glucose, .9% NaCl
Hypertonic
^ in osmotic pressure on RBC's, h2o flows out of RBC's causing crenation
Hypotonic
decrease in osmotic pressure on RBC's, h2o flows into RBC's hemolysis.