Standard Free Energy of FormationThe standard free energy of formation, AG, of a substance is the freeenergy change for the formation of one mole of the substance from thecomponent elements in their standard states. These values are applicableat 25 °C and are found in thermodynamic tables.The value of AG for a substance gives a measure of thethermodynamic stability with respect to the component elements.Negative values for a formation reaction indicate thermodynamic stabilityof the product. In other words, the compound formed does notspontaneously decompose back into the component elements. Positivevalues for a formation reaction indicate thermodynamic instability of theproduct. Thus, the compound will spontaneously decompose, though therate may be slow.The sign of AG? can be used to predict the feasibility of synthesizing asubstance from its component elements. The standard free energychange for a reaction, AG, is a state function and can be calculatedfrom the standard free energies of formation as follows:AGxn=₂AG (products)-n,AG; (reactants)where np and T, represent the stoichiometric coefficients in the balanced.chemical equation for the reactants and products respectively.▼Part ABased on the standard free energies of formation, which of the following reactions represent a feasible way to synthesize the product?Drag the appropriate items to their respective bins.▸ View Available Hint(s)2C(s) + H₂(g) →>C₂H₂(g)AG=209.2 kJ/molSubmitN2(g) + 3H2(g) →>2NH3(g)AG = -33.30 kJ/molFeasible synthesisS(s) + O₂(g) →SO₂(g)AG-300.1 kJ/molC(s) + 25(s) CS₂(g)AG 67.10 kJ/molNot a feasible synthesisReset Help<29 ofReview | Constants | Periodic

Feasible reactions are those for which standard free energy of formation is negative. Whereas the…

Based on the standard free energies of formation, which of the following reactions represent a feasible way to synthesize the product? Drag the appropriate items to their respective bins. ▸ View Available Hint(s) 2C(s) + H₂(g) C₂H₂(g) AG-209.2 kJ/mol N₂(g) + 3H2(g) +2NH₂(g) AG-33.30 kJ/mol Feasible synthesis S(s) + O₂(g) SO₂(g) AG-300.1 kJ/mol C(s) + 25(s) CS2(g) AG-67.10 kJ/mol Not a feasible synthesis Reset Help

Based on the standard free energies of formation, which of the following reactions represent a feasible way to synthesize the product? Drag the appropriate items to their respective bins. ▸ View Available Hint(s) 2C(s) + H₂(g) C₂H₂(g) AG-209.2 kJ/mol N₂(g) + 3H2(g) +2NH₂(g) AG-33.30 kJ/mol Feasible synthesis S(s) + O₂(g) SO₂(g) AG-300.1 kJ/mol C(s) + 25(s) CS2(g) AG-67.10 kJ/mol Not a feasible synthesis Reset Help

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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