Q.3 A constant-volume batch reactor is utilized to carry out a gaseous reaction 2A-R+2S which is a second order reaction for the component A. A pure stream of A is fed to the reactor and hence pressure in the reactor rises by 50% in 5 minutes. For the case of constant-pressure batch reactor, find (i) characteristic time required to achieve the same conversion and (ii) volume change (in %) at that length of time for pressure calculations use the expression PA= PA (P-P) An Where, An = change in number of moles PA = partial pressure of A at any time t a