Chemistry Lect 4

Collids
- the solute and solvent can be seperated via a semi-permiable membrane
- i.e. aerosols
- particulate
_____ dissolves _____.
- Like, like
- i.e. polar dissolves polar and non-polar dissolves non-polar
Molality

m = mol of solute / kg of solvent
Parts per million

ppm = (mass of solute / total mass of solu'n) * 10⁶
Exothermic Rxns and Bonding

a solu'n that gives off heat is creating stronger bonds within the solution
Vapor Pressure and Temp

Vapor pressure is linked to K.E. and therefore increases when temp increases
Boiling Pt

v.p._liquid = P_atmosphere
Melting Point

v.p._solid = v.p._liquid
Vapor Pressure and Nonvolatile Solutes

Nonvolatile solutes do not contribute to the v.p. --> reaches the surface and reduces the amount of molecules "breaking free" per S.A.
Solubility Factors

Depends on Temp and Ions in solu'n
Saturation

Equilibrium between precipitation and dissolution
K_sp
- K_sp = products/reactants
- only changes with temperature
Increasing temp usually ____ solubility of gases.

decreases

Author

laskiru

58980

Card Set

Chemistry Lect 4

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Solutions

Updated

2011-01-10T19:04:23Z

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