The following gas phase reaction is carried out in a batch reactor, under isothermal conditions and at constant pressure. A2B Initially at time t=0, the reactor contains 100 moles of A, 50 moles of B and 100 moles of inert materials. The reaction is second order with a rate constant of 0.005litmol1 sec1. Volume of the reactor at time t=0 is 10,000 lit. Determine the time required for 50% conversion. (b) What would be the time needed for the same conversion if the reaction was conducted in a constant volume batch reactor