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12 Cards in this Set
- Front
- Back
Heat Capacity (C)
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A measure of the energy change needed to change the temperature of a substance:
C = q/dT |
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T or F: Constant Pressure heat capacities are greater than constant volume heat capacities
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True
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Two Heat Capacities for any substance:
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Constant Volume Heat Capacity: C(v) = q/dT [constant volume]
Constant Pressure Heat Capacity: C(p) = q/dT [constant pressure] |
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General Heat Capacity Eqn.
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q = C*dT
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Specific Heat Capacity Eqn.
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q = m*c*dT
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Specific Heat of Water
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1 cal*g^-1*C^-1
C in Celcius |
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Coffee Cup Calorimeter
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-An example of a const. P/V calorimeter
-Measures heat of reaction q = dH at const pressure q = m*c*dT |
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Bomb Calorimeter
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-Measures internal energy change at constant volume
q = dU q = C*dT |
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Read pp. 83-85
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Chemistry (Lecture 5)
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Four colligative properties of solutions:
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1) vapor pressure
2) boiling point 3) freezing point 4) osmotic pressure depend upon number, not kind |
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When does a substance boil?
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When its vapor pressure equals the local atmospheric pressure
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Read pages 88-89
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Chemistry (Lecture 5)
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