How would they ask a question of this variety, calculating Delta G and how would

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How would they ask a question of this variety, calculating Delta G and how would you go about solving it?

f Facebook x osmotic pres x M Subscriptions x lever rule o x B The Lever Ru x C https es.s3.amazonaws.com/i PAWSAccessKeylds AKIAIEDNRU4AzKBW6HA&Expires; 481052151 8 O Cn O Apps M UCR M Gmail Li Poc f Facebook o My subscriptions D Computer Science 8 pectrum sportsNet Files oneprive C Atkins' Physical Ch c chegg study l Guided c physical chemistry 6t L other bookmarks Lecture12Dec16 Fall 2016 Chem 110 Lecture Week 10, Fri 12/2/2016 Problem 30, The equilibrium constant for the reaction Festo,( COR) -3FeOUs) CO R) is I, 5 at 600°C. If a mixture of 2.00 mol Fesos, 3.00 mol CO, 4.00 mol Feo. and 5.000 mol CO, is brought to equilibrium at 600°C. find the equilibrium composition. Assume the pressure is low enough for the gases to behave ideally. K PNCO PCO)- 1.15. Assuming ideal gas behavior, Dalton's Law applies: Pa-x P- Initial Q-n(CO2)n(CO) 5.00/3.00 1.67. Since 1.67> 5, the equilibrium shifts to the left or to the reactants. Initial 200 400 500 At equilibrium, (5.00 -x1(3,00 5. Solving for x,x-0,72. Therefore, at equilibrium, n(Fe 0.-2.72 mol, n(CO-3, 72 mol, n(Feo 1.84 mol, n(CO2-4.28 mol. For the final, you should know how to calculate AG, and be able to calculate the equilibrium amounts of material in the system given any change, ust like in Problems 31 and l 32 GAM a P PSI Pr Ask me any 2/6/2016

Explanation / Answer

WE know that deltaG= -RT lnK

deltaG= 8.314*(600+273)* ln (1.15)=-1014.41 Joules

For the reaction, Fe3O4+CO-à3FeO +CO2

Let x = drop in moles of FeO to reach equilibrium

At Equilibrium Fe3O4= 2+x, CO= 3+x, FeO= 4-3x and CO2= 5-x

K= 1.15= (5-x)/(3-x)

Hence x= 0.72, So knowledge of DeltaG gives lnK and K. Knowledge of K will be useful in determining composition.

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