Chemistry 152 Exam Guide 2

# Chemistry 152 Exam Guide 2 - Chemistry 152 Exam(Fall 2011...

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1 Chemistry 152 Exam (Fall 2011) When: 130-220 pm ;2 Dec. 2011 Where: Bagley 131 Bring: Pen, calculator Consult Seating Chart on Web Site Units: Force: 1 Newton (N)=1 kg m s -2 Energy: 1 Joule =1 N m =1kg m 2 s -2 =1Coulomb Volt=1CV 101.3 J= 1 liter atm Volume: 1 liter= 10 -3 m 3 Pressure: 1Pascal (Pa)=1 N m -2 1 atm=101325 Pascals Useful Constants: g=gravitational acceleration=9.8m s -2 R =Universal Gas Constant= 8.314 J/mol.K = 0.0821 liter.atm/mol.K N A =Avogadro’s Number= 6.022 x 10 23 molecules/mol Boltzmann’s Constant: kB = =R/N A 1.38 x 10 -23 J/K Planck’s constant=6.62x10- 34 Js Electron Mass: m e =9.1x10 -31 kg Electron Charge: e=1.6x10 -19 C (i.e. Coulombs). Faraday’s Constant: F=96485 C/mol Bohr radius: 10 0.529 10 n rm Useful Equations and Concepts 1) Equilibrium Constant and Reaction Quotient (sections 10.11 and 10.12): Standard Free Energy Changes for Chemical Reactions () rxn f f G G products G reactants ∆° =Σ −Σ DD Equilibrium Constant for Chemical reactions (gas phase) () () () ( ) AB CD Ag Bg Cg Dg ν νν ++ ZZX YZZ : ( ) o E anode ( ) ( ) D C eq eq D ref C ref eq eq Ar e f Br e f PP K = where eq i P is the partial pressure of reaction component i at equilibrium and the reference pressure is 1 ref Pa t m = . For solution phase equilibria use equilibrium concentrations in units of

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Chemistry 152 Exam Guide 2 - Chemistry 152 Exam(Fall 2011...

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