Define selectivity and yield.?
Selectivity is the ratio of the desired product formed in moles to the undesired product formed in moles
Yield is the measure of the performance of reactor or plant.
For a reactor
Yield =(moles of product formed × stoichiometric factor)/(moles of reactant converted)
Where stoichiometric factor =
Stoichiometric moles of reactant required per moles product formed