For an irreversible first - order liquid - phase reaction (CA0=10mol/liter) conversion is 90 % in a plug flow reactor . If two thirds of the stream leaving the reactor is recycled to the reactor...

For an irreversible first - order liquid - phase reaction (CA0=10mol/liter) conversion is 90 % in a plug flow reactor . If two thirds of the stream leaving the reactor is recycled to the reactor entrance , and if the the whole reactor - recycle system is kept unchanged , what does this do to the concentration of reactant leaving the system ?