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tp/aaw.saplingleaming.com/biscms/mod ibis view.phpid-1635112 w Favorites Tools Help o 5/16/2015 1 1:55 PM62/100 mpts Score Print CakuatorPeriodic Table Question 17 al 25 Compound lmol) Compound 1001(klmo) at 25 Use the data given here tocalculate the values of for the reaction described by the equation +387 7 843.9 +4020 A+B k J Tools ir rn, and AS% gative values, what drives the spontaneous reaction and in what direction at standard conditions? The spontaneous reaction is O entropy-driven to the left. O entropy-driven to the right O enthalpy-driven to the right. O enthalpy-driven to the left. 100 O Prvous GraUp & View Sclulian check Answer 0 Next nissaping Learning, Inc about us careers paners privacy policy terms of use

Explanation / Answer

deltaG = deltaG products - deltaG reactants

since there is only 1 mole, just use the values in the chart

deltaG = 402.0 - (387.7 + -643.9) = 658.2 kJ

For part 2, remember the dG = dH - TdS

therefore, if dH < 0 and dS < 0, and dH < TdS, the reaction is spontaneous and is enthalpy driven. Thus, dH (enthalpy) is driven to the left

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