 Quote by answerseeker
but have another query: for reaction kinetics, when monitoring the change in a closed system, would you only look at the reactant side for the change?
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Changes in the reactant side are related to changes in the product side through the stoichiometry of the reaction. For instance :
[tex]2HBr \leftrightarrow H_2 + Br_2 [/tex]
Consuming 2 moles of HBr produces a mole each of H
2 and Br
2. So, removing any x moles of HBr yields an increase by x/2 moles each of H
2 and Br
2.
[tex]\Delta [H_2] = \Delta [Br_2] = -\frac {1}{2} \Delta [HBr] [/tex]
[tex] \implies \frac {d}{dt} [H_2] = \frac {d}{dt} [Br_2] = -\frac {1}{2} \frac {d}{dt}
[HBr] [/tex]