Jump to... estion 11 of 20 General Chemistry 4th Edition University Science Book

Question

Jump to... estion 11 of 20 General Chemistry 4th Edition University Science Books presented by Sapling Learning Compound AGt (kmol) Use the data given here to calculate the values of ?~nn at 25°C for the reaction described by the equation +387.7 -511.3 +402.0 8 A+B Number ?Grr n- 1-489.8 | kJ/mol If ??'m and AS-ran are both positive values, what drives the spontaneous reaction and in what direction at standard conditions? The spontaneous reaction is O entropy-driven to the right O enthalpy-driven to the right O enthalpy-driven to the letft. O entropy-driven to the left Previous ? Give Up & View Solution Check Answer 0 Next -51- Hint

Explanation / Answer

We know

?Gorxn = sum[ ( ?Gof(products) * n(products)] - sum [(?Gof(reactants) * n(reactants)]

?Gorxn = 1.0 * ?Gof(C) - [ 1.0 * ?Gof(A) + 1.0 * ?Gof(B)]

?Gorxn = 1.0 * 402.0 KJ/mol - [ 1.0 * 387.7 KJ/mol + 1.0 * (-511.3 KJ/mol)]

?Gorxn = 402.0 KJ/mol + 123.6 KJ/mol = 525.6 KJ/mol

?Gorxn = 525.6 KJ/ mol

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