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. Reset Help C(s) + O2(g)→CO2(g) AG; = -394.4 kJ/mol N2(g) + 202(g)¬→2NO2(g) AG; = 102.6 kJ/mol %3D N2(g) + O2(g)→2NO(g) AG; = 173.2 kJ/mol 2P(s) + 3C12(g)¬+2PC13(g) AG; = -267.8 kJ/mol %3D Feasible synthesis Not a feasible synthesis
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. Reset Help C(s) + O2(g)→CO2(g) AG; = -394.4 kJ/mol N2(g) + 202(g)¬→2NO2(g) AG; = 102.6 kJ/mol %3D N2(g) + O2(g)→2NO(g) AG; = 173.2 kJ/mol 2P(s) + 3C12(g)¬+2PC13(g) AG; = -267.8 kJ/mol %3D Feasible synthesis Not a feasible synthesis
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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Transcribed Image Text: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.
Reset
Help
C(s) + O2(g)→CO2(g)
AG; = -394.4 kJ/mol
N2(g) + 202(g)→+2NO2(g)
AG; = 102.6 kJ/mol
N2 (g) + O2(g)→2NO(g)
AG; = 173.2 kJ/mol
2P(s) + 3C12 (g)¬→2PC13 (g)
AG;
= -267.8 kJ/mol
Feasible synthesis
Not a feasible synthesis

Transcribed Image Text:The standard free energy of formation, AG?, of a substance is
the free energy change for the formation of one mole of the
substance from the component elements in their standard
states. These values are applicable at 25 °C and are found in
thermodynamic tables.
The value of AG: for a substance gives a measure of the
thermodynamic stability with respect to the component
elements. Negative values for a formation reaction indicate
thermodynamic stability of the product. In other words, the
compound formed does not spontaneously decompose back
into the component elements. Positive values for a formation
reaction indicate thermodynamic instability of the product.
Thus, the compound will spontaneously decompose, though
the rate may be slow.
The sign of AG; can be used to predict the feasibility of
synthesizing a substance from its component elements. The
standard free energy change for a reaction, AG°, is a state
function and can be calculated from the standard free energies
of formation as follows:
ΔG Σ n, ΔG; (products) -Σn ΔG; (reactants)
where np and n represent the stoichiometric coefficients in
the balanced chemical equation for the reactants and products
respectively.
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