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http://njit2.mrooms.net/mod/quiz/attempt.php?atten hapter 17 Regular Ho Home Chegg.com Your question needs to File Edit View Favorites Tools Help uuewton 14 what Is AG (ink) at 8 ac for the phase change or ntromethane fomtheliquld to the gaseous state? previous question ing pol uu 17 .At 298 K AG --636 K. or the reacton: atm Pos Help given uuwaan 18 Under the condnons inthe previous question, In which drection the reaction spontaneous? Markas ut 1 co a. to the left (more reactant ou ation b, to the rignt (more product) uu wton 19 AL298 K, AG 868 kJ for the reaction: Under standard conditons what the spontaneous dlrection (Recall, the aner AG means standard condnons, that le, Bome soldznFa 1 molar concentrations for Zm (aq and Faq). and 298 KM no other temperature specned. atothe len (more precipitate forms) O b to the right (more solddesolves) uurwson 20 calculate AG KJ)at2ga Kfor some soldznF2, 0.081 Mzn and o.068 MFYaqo. Not yet nrw Hint ghen in feedback. New messages (1) messages ignore

Explanation / Answer

14. dGo = dHf - T dSo

T = 68oC = 68+ 273 = 341K

For, CH3NO2(l), dGo = -113100J/mol - (341)(171.8J/molK) = -171683.8J/mol

For, CH3NO2(g), dGo = -74700J/mol - (341)(274.4J/molK) = -168270.4J/mol

dG = dGoproducts - dGo reactants = -168270.4J/mol - (-171683.8J/mol) = 3413.4J/mol = 3.41kJ/mol

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