Material Balance on Reactive Processes

The extent of reaction (or is the amount of moles (or molar flow rate) that 

C2H4+C2H6 C3H6+CH4 This leads to the following definitions  

Moles formed if there were no side reactions and limiting reactant reacts completely 

The concept of extent of reaction can also be applied to multiple reactions, with each reaction having its own extent. If a set of reactions takes place in a batch or continuous, steady-state reactor, we can write 

For a single reaction, fhe above equation reduces to the equation reported in a previous section. 

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