(Solved): Extent of Reaction of ith reaction The reaction rate, r, is defined as the number of times this r ...

Extent of Reaction of $i^{\text{th }}$ reaction The reaction rate, $r$, is defined as the number of times this reaction event takes place per time per volume. We define the reaction extent (or extent of reaction) to keep track of the number of times this reaction event takes place. The reaction rate is then, $r_i=\frac{?{?}_i}{?tV}{?}_i=\frac{{?}_i{N}_j}{v_{ij}}$ ${?}_i{N}_j$ is the change in the moles of species $\mathrm{j}$ by ${\mathrm{i}}^{\text{th }}$ reaction Question. Derive ${?}_i=\frac{{?}_i{N}_j}{v_{ij}}$ from $r_i=\frac{?{?}_i}{?tV}$