Selectivity Basic Question

I know selectivity is = No of mole of desired product formed/ No of mole of reactant took part in the reaction (reactant Basis)

Ethylene Oxide example

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Considering only first two reactions (No further oxidation of EO)

Assume 153 Kmol/hr of EO forms

So if I have 90% selectivity that means I will have 34 Kmol/hr of CO2. (As every 1 mole ethylene produces 2 mol of CO2)

Another thing selectivity is for overall process so with recycle right?

Much appreciated.

Edited by lnbsak, 21 April 2021 - 08:23 PM.