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16 Cards in this Set
- Front
- Back
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Heat capacity
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A measure of the energy change needed to change the temperature of a substance.
C = q/ ΔT |
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Heat capacity of a system
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q = CΔT
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Specific heat capacity
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Heat capacity per unit mass
q = mcΔT |
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Coffee cup calorimeter
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Constant pressure calorimeter, measures energy change at atmospheric pressure; measures energy change at atmospheric pressure
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Bomb calorimeter
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Measures energy change at constant volume; tells the internal energy change in a reaction
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Heat of fusion
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Enthalpy change associated with melting
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Heat of vaporization
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Enthalpy change associated with boiling
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Triple point
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Point where a substance can exist in equilibrium as a solid, liquid, and gas
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Critical temperature
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Temperature at which a substance cannot be liquefied regardless of the pressure applied
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Critical pressure
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Pressure required to produce liquefaction while the substance is at the critical temperature
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Critical point
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Critical temperature and critical pressure together
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Colligative properties
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Depend solely on the number of particles.
Four colligative properties 1. Vapor pressure 2. Boiling point 3. Freezing point 4. Osmotic pressure |
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Boiling point elevation
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ΔT = (Kb)mi
m= molality i = van't Hoff factor; number of particles into which a single solute particle will dissociate when added to solution |
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Freezing point depression
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ΔT = (Kf)mi
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Osmotic pressure
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The tendency of a fluid, usually water, to pass through a semipermeable membrane into a solution where the solvent concentration is higher, thus equalizing the concentrations of materials on either side of the membrane.
Π = iMRT Πb = ρghb - ρgha M = Molarity |
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Mole
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mol = weight of sample (g) / molar weight (g/mol)
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