2KCIO3 (s)→2KCI(s) + 302(g) and the following table of values: AG Substance (kJ/mol) KC103 (s) -296.3 KC1(s) -408.2 O2 (g) State whether it would be worthwhile to investigate finding a catalyst to use in this under standard conditions and explain why. Yes, because AG° is negative. No, because AG° is negative. Yes, because AG° is positive. No, because AG° is positive.

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Consider the reaction
2KCIO3 (s)→2KCI(s) + 302(g)
and the following table of values:
AG
(kJ/mol)
Substance
KC103 (s)
-296.3
KC1(s)
-408.2
O2 (g)
State whether it would be worthwhile to investigate finding a catalyst to use in this reaction
under standard conditions and explain why.
Yes, because AG° is negative.
No, because AG° is negative.
Yes, because AG° is positive.
O No, because AG° is positive.
Transcribed Image Text:Consider the reaction 2KCIO3 (s)→2KCI(s) + 302(g) and the following table of values: AG (kJ/mol) Substance KC103 (s) -296.3 KC1(s) -408.2 O2 (g) State whether it would be worthwhile to investigate finding a catalyst to use in this reaction under standard conditions and explain why. Yes, because AG° is negative. No, because AG° is negative. Yes, because AG° is positive. O No, because AG° is positive.
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:
AGin = EMpAG; (products) – ETAG; (reactants)
where np and n, represent the stoichiometric coefficients in
the balanced chemical equation for the reactants and products
respectively.
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: AGin = EMpAG; (products) – ETAG; (reactants) where np and n, represent the stoichiometric coefficients in the balanced chemical equation for the reactants and products respectively.
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