Bear with me, please. My knowledge of Gibbs, bond formation, entropy and enthalpy is weak, and I think they're needed to figure this out.(adsbygoogle = window.adsbygoogle || []).push({});

Suppose I have "some" sulfuric acid and "some" salt, and I mix them. At least two reactions are possible:

H_{2}SO_{4}+ NaCl -> Na_{2}SO_{4}+ HCl

H_{2}SO_{4}+ NaCl -> NaHSO_{4}+ HCl

(I have intentionally left out coefficients) the stochiochemistry of the inputs does not (necessarily) determine the outcome: an excess of one reagent might pass unreacted through to the end of the equation, leaving either one a legitimate outcome.

So we have several forces warring with one another:

1) The stochiochemistry of the reactants

2) Entropy

3) The "energy level" of the sulfate vs bisulfate

4) The input energy (heat)

So two questions:

1) How do I know what product will be favored under what conditions? vs

2) How do I arrange conditions such that a particular product will be favored?

Thanks kindly for any insight.

-Jeff

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# Favored products (really a conceptual) question

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