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My Courses - oakton.edu Homepage - CHM-122-002 Pearson MyLab and Mastering MasteringChemistry MasteringChemistry: Chapter... Search Textbook Solutions | Our Atmosphere ls Chapar 18 HomeworkExerciee 18.8T previous l 12 of 15 | neo Exercise 18.87 Part A Ethene C H can be halogensied by the following reacion: Usalhe lh(rmodynamic data gian below kakulale He ar tha hak genalian faacian by Cl: al 29C. CompndAH (kJ/mol) AS(J/mol K) C H C29)129.7 CHBrg) 38.3 CH42)66.5 330.6 47.8 kI Mly Answers SvUe Part B Use the thermodynamic data given to calculate .s-for the halogenation reaction by a2 at 29" C. AS88.44 J/K My Answers Give Up Incorrect; Try Again; 5 attempts remaining Part C Use th" thermodynamic data given to colotete Ge for the halogenst on reaction by Cl2 et 29-c k.l Part D Uae the thermodynamic data given to at Kp for the halogenation reaction by Cl at 29 C

Explanation / Answer

A)

C2H4 + Cl2 ------> C2H4Cl2

dH0 = dH products - dH reactants

dH0 = (-129.7) - (52.5 +0)

dH0 = -182.2 kJ/mol

B)

dS0 = dS products - dS reactants

dS0 = 308.0 - (219.5 + 223)

dS0 = -134.5 J/K

C)

dG0 = dH0 - TdS0

dG0 = -182.2 * 10^3 - (29+273)(-134.5)

dG0 = -141581 J/mol

D)

dG0 = -2.303RTlogK

-141581 = -2.303*8.314*(29+273)logK

K = 3.0525 * 10^24

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