{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Thermochemistry - CH3 Thermochemistry Physical change 3.1...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
CH3 Thermochemistry Physical change 3.1 The enthalpy of phase transition 3.2 Atomic and molecular change (Read) Chemical change 3.3 Enthalpies of combustion 3.4 The combination of reaction enthalpies 3.5 Standard enthalpies of formation 3.6 Enthalpies of formation and molecular modelling 3.7 The variation of reaction enthalpy with temperature
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2
Background image of page 2
3 Phase Changes solid liquid gas melting or fusion freezing vaporizing condensing sublimination endothermic exothermic are determined by the interplay between kinetic and intermolecular forces
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
4
Background image of page 4
Table 3.1 Standard enthalpies of transition at the transition temperature* Substance Freezing point, T f /K Δ fus H o /(kJ mol - 1 ) Boiling point, T b /K Δ vap H o /(kJ mol Ammonia, NH 3 195.3 5.65 239.7 23.4 Argon, Ar 83.8 1.2 87.3 6.5 Benzene, C 6 H 6 278.7 9.87 353.3 30.8 Ethanol, C 2 H 5 OH 158.7 4.60 351.5 43.5 Helium, He 3.5 0.02 4.22 0.08 Mercury, Hg 234.3 2.292 629.7 59.30 Methane, CH 4 90.7 0.94 111.7 8.2 Methanol, CH 3 OH 175.5 3.16 337.2 35.3 Propanone, CH 3 COCH 3 177.8 5.72 329.4 29.1 Water, H 2 O 273.15 6.01 373.2 40.7 * For values at 298.15 K, use the information in the Data section .
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Example 3.1
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}