Lecture 9 Notes

Twoequalmasssamplesofwaterproducedby 1

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Unformatted text preview: olid → liq enthalpy of fusion liq → gas enthalpy of vaporization 2260 −333 enthalpy of condensation −2260 Note: ΔHfusion = − ΔHfreezing State functions Always have the same value whenever the system is in the same state. State functions H P T 333 liq → solid enthalpy of freezing gas → liq State Functions and Path Independence etc. Two equal mass samples of water produced by: 1. Heating one from 20°C to 50°C. 2. Cooling the other from 100°C to 50°C. have identical final H (and V, P, E…). E V etc. State function changes are path independent. ΔH = Hfinal – Hinitial is constant. qfusion = −qfreezing Thermochemical Expressions ΔH = qP can be added to a balanced equation. CH4(g) + 2 O2(g) → CO2(g) +...
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This note was uploaded on 03/02/2014 for the course CHEM 101 taught by Professor Multipleprofs during the Spring '07 term at Drexel.

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