CHEM 14B Lecture 2: Chem 14B (Lavelle) lecture #2
22 Jan 2018
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Isn"t dependent on path taken to obtain the state . properties can be added subtracted . 8 heatcq ) depends on path taken hence not state properties . Temp of sample beak bonds to remains same despite constant heat being supplied since it"s being used to facilitate phase change . 100 c causes more severe beans than water at look . Renee steam has more heat energy than water. Hess "s law : enthalpy changes are additive . Enthalpy change at each step of a multiple step ran can be added to give total enthalpy change . , ) 8 its an with qg head , can we calculate. Energy required ( endo ) ( exo ) Since reactants products can be different states ears can own at diff pressure the enthalpies of a son can be different. In their standard state at latm an enthalpy is called. Foe a pace liquid or solid it"s the pure.
