As a consequence of Le Chatelier's Theory, various changes can be made to a system at equilibrium and the original position of the system will return. A situation where the equilibrium position will permanently change is the case of a change in temperature. The learned reader will deduce, from the prior sentence, that the equilibrium constant itself is affected by a change in temperature (aka, the Keq).
To help explain Keq temperature dependence, it is useful to include the word, 'heat', in the chemical equation of the reaction. Heat energy is treated as a reactant or product, depending on the relative potential energy change, as reactants are consumed and products formed. The equilibrium position change vs. temperature change is similar to the effects of changing reactant or product concentration. The difference, however, is that the equilibrium will not shift back in an effort to negate the position change. The following figure summarizes this discussion.
As always, Thank you for reading.
A Publication of http://ExcellenceInLearning.biz
To help explain Keq temperature dependence, it is useful to include the word, 'heat', in the chemical equation of the reaction. Heat energy is treated as a reactant or product, depending on the relative potential energy change, as reactants are consumed and products formed. The equilibrium position change vs. temperature change is similar to the effects of changing reactant or product concentration. The difference, however, is that the equilibrium will not shift back in an effort to negate the position change. The following figure summarizes this discussion.
As always, Thank you for reading.
A Publication of http://ExcellenceInLearning.biz
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