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Unit 5 Review - Chpt 13

Unit 5 Review - Chpt 13. Equilibrium concepts K expression - mass action Q K p = K(RT)  n  n is prod - react #of moles ICE method, use approximations when appropriate Le Chatelier’s Principle. Unit 5 Review - Chpt 17. Thermo concepts - Entropy, Free Energy and Spontaneity

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Unit 5 Review - Chpt 13

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  1. Unit 5 Review - Chpt 13 • Equilibrium concepts • K expression - mass action Q • Kp = K(RT)n n is prod - react #of moles • ICE method, use approximations when appropriate • Le Chatelier’s Principle

  2. Unit 5 Review - Chpt 17 • Thermo concepts - Entropy, Free Energy and Spontaneity • Suniv = Ssyst + Ssurr for spontaneous process Suniv > 0 • Calc Ssurr = - H/T is syst exo or endo? • Sorxn =  nSoprod -  nSoreact

  3. Free Energy • A measure of whether a reaction is spontaneous. Also the maximum amount of work that can be done by a process (the energy that is free to do work) • Go = Ho - TSoomeans standard state • Go=  nGoprod -  nGoreact • Grxn = Go - RTlnQ At equilibrium G = 0 and Q becomes K Go = -RTlnK also Ho = TSo calc Temp

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