110c-lecture10

# 110c-lecture10 - Midterm 1 Wed April 21st 21 and 22.1-22.7...

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Midterm 1 Wed April 21 st . Chapters 19, 20, 21, and 22.1-22.7. 3” x 5” index card Review session? Problem Set #3 Due Wed April 28th.

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Chapter 19 Summary First Law of Thermodynamics: U = q + w or dU = δ q + δ w dT T C q U T T V ) ( 2 1 = = = = 2 1 V V V dV nRT w q V = 0, w=0 T = 0, U=0 q=0 = = 2 1 T T dT nR w U Enthalpy (H) vs. Internal Energy (U): = = + = 2 1 V V V q PdV q w q U Const=V: PV U H + = P P q H = Const=P: (PV work) P P q VdP PdV PdV q dH δ δ = + + = ( ) RT n U nRT U PV U H gas + + = + = ) ( Heat Capacity (C P vs. C V measured by calorimetry): ) ( T C T q T U V V V = = Const=V: ( U = q V ) ) ( T C T q T H P P P = = Const=P: ( H = q P ) Temperature Dependence of U and H: dT T C T U T U dV V U dT T U dU T T V T V = + = 2 1 1 2 ) ( ) ( ) ( δ δ δ δ dT T C T H T H dP P H dT T H dH T T P T P = + = 2 1 1 2 ) ( ) ( ) ( δ δ δ δ