Ch 9 Energy, Enthalpy, and Thermochemistry

More documents

Recommendations

Info

9.1 The nature of energy<strong>Energy</strong> : the capacity to do work or to produce heat.Law of conservation of energy : the energy can beconverted from one form to another but can beneither created nor destroyed. That is, the energyof the universe is constant.Copyright©2000 by HoughtonMifflin Company. All rights reserved.2
<strong>Energy</strong> can be classified as either potential energyor kinetic energy.Potential energy is due to position or composition.I.e., water behind a dam, attractive/repulsive forces…Kinetic energy of an object is due to the motion &depends on the mass of the object (m) & its velocity(ν) : KE = 1/2mν 2 .Copyright©2000 by HoughtonMifflin Company. All rights reserved.3
Page 4: Figure 9.1: Initial positions ball
Page 10 and 11: In combustion of methane (CH 4 ), t
Page 12 and 13: Figure 9.3: Energy diagram for ther
Page 14 and 15: Internal energy (E) is defined as t
Page 16 and 17: Figure 9.4: The piston moving a dis
Page 18 and 19: Expanded : w = -pΔV(0)In dealing w
Page 20 and 21: R = 0.08206 Latm/Kmol= 8.3145 J/Kmo
Page 22 and 23: What is exactly enthalpy (H) ?Consi
Page 24 and 25: At constant pressure (where only PV
Page 26 and 27: The molar heat capacity of a substa
Page 28 and 29: Heating an ideal gas at constant pr
Page 30 and 31: 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 52 and 53:
Copyright©2000 by HoughtonMifflin
Page 54 and 55:
Mass of solution = 100.0 mLx1.0 g/m
Page 56 and 57:
Page 58 and 59:
Calculation of ΔH & ΔE for cases
Page 60 and 61:
Page 62 and 63:
Page 64 and 65:
Calorimetry experiments can also be
Page 66 and 67:
Page 68 and 69:
Page 70 and 71:
Page 72 and 73:
Page 74 and 75:
Characteristics of enthalpy changes
Page 76 and 77:
Page 78 and 79:
過火Copyright©2000 by HoughtonM
Page 80 and 81:
9.6 Standard enthalpies of formatio
Page 82 and 83:
The importance of tabulated ΔH° f
Page 84 and 85:
Page 86 and 87:
• The change in enthalpy for a gi
Page 88 and 89:
Figure 9.12: Pathway for the combus
Page 90 and 91:
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 98 and 99:
Page 100:
Possible solution:H 2(g) + M (s)
show all

Ch 9 Energy, Enthalpy, and Thermochemistry

Create successful ePaper yourself

Delete template?

Save as template?