P4.14 Dimethyl carbonate (DMC, C₂H₂O3) can be synthesized by a process

called oxidative carbonylation of methanol:

A gas containing 80 mol % CH3OH and 20 mol % CO at 2000 gmol/h is

mixed with air (79 mol % N₂ and 21 mol % O₂) and then fed to a reactor

operating at steady state, where the reaction takes place. The flow rate of

the stream leaving the reactor is 2264 gmol/h, and this stream contains no

O₂. Draw a flow diagram and write the correct form of the material balance

equations for all compounds in this system. Determine the flow rate of air

to the reactor, the extent of reaction 4, and the composition (mol %) of the

reactor effluent.