Ch 9 Energy, Enthalpy, and Thermochemistry

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The importance of tabulated ΔH° f values is thatenthalpies for many reactions can be calculated.Copyright©2000 by HoughtonMifflin Company. All rights reserved.82
Fig. 9.11: Schematic diagram of the energy changesCH 4(g) + 2O 2(g) → CO 2(g) + 2H 2 O (l)Copyright©2000 by HoughtonMifflin Company. All rights reserved.83
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9.1 The nature of energyEnergy : th
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Figure 9.1: Initial positions ball
Page 10 and 11:
In combustion of methane (CH 4 ), t
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Figure 9.3: Energy diagram for ther
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Internal energy (E) is defined as t
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Figure 9.4: The piston moving a dis
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Expanded : w = -pΔV(0)In dealing w
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R = 0.08206 Latm/Kmol= 8.3145 J/Kmo
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What is exactly enthalpy (H) ?Consi
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At constant pressure (where only PV
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The molar heat capacity of a substa
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Heating an ideal gas at constant pr
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Heating a polyatomic gas : as a pol
Page 32 and 33: Table 9.1: Molar Heat Capacities of
Page 34 and 35: The C V appears because when a gas
Page 36 and 37: Consider the change in enthalpy whe
Page 38 and 39: Table 9.2:Thermodynamic properties
Page 40 and 41: Figure 9.5: Summary of the two path
Page 42 and 43: ΔH = nC P ΔT= q PCopyright©2000
Page 44 and 45: (constant V)Copyright©2000 by Houg
Page 46 and 47: Copyright©2000 by HoughtonMifflin
Page 48 and 49: Figure 9.6: Magnitude of the work f
Page 50 and 51: Specific heat capacity (JK -1 g -1
Page 54 and 55: Mass of solution = 100.0 mLx1.0 g/m
Page 58 and 59: Calculation of ΔH & ΔE for cases
Page 64 and 65: Calorimetry experiments can also be
Page 74 and 75: Characteristics of enthalpy changes
Page 78 and 79: 過火Copyright©2000 by HoughtonM
Page 80 and 81: 9.6 Standard enthalpies of formatio
Page 86 and 87: • The change in enthalpy for a gi
Page 88 and 89: Figure 9.12: Pathway for the combus
Page 92 and 93: The enthalpy of combustion per gram
Page 94 and 95: ( 煤油 )( 噴射機燃料 )(
Page 96 and 97: Figure 9.15: Coal gasificationCopyr
Page 100: Possible solution:H 2(g) + M (s)
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Ch 9 Energy, Enthalpy, and Thermochemistry

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