Question 5

REACTOR TUTORIAL 1) Find the first-order rate constant for the disappearance of A in the gas reaction 2A R if, on holding the pressure constant, the volume of the reaction mixture, starting with 80% A, decreases by 20% in 3 minutes. 2) Find the first-order rate constant for the disappearance of A in a gas reaction A1.6 R if the volume of the reaction mixture, starting with pure A, increases by 50% in 4 minutes. The total pressure within the system stays constant at 1.2 atm, and the temperature is 20 C. 3) A zero-order homogeneous gas reaction ArR proceeds in a constant-volume bomb, 20% inerts, and the pressure rises from 1 to 1.3 atm in 2 minutes. If the same reaction takes place in a constant-pressure batch reactor, what is the fractional volume change in 4 minutes if the feed is at 3 atm and consists of 40% inerts. 4) A zero-order homogeneous gas reaction with stoichiometry ArR proceeds in a constant-volume bomb, the total pressure = 1 atm when t = 0 and total pressure = 1.5 atm when t=1. if the same reaction, same feed composition, and initial pressure proceeds in a constant-pressure setup, find V at t=1 if V=1 at t=0. 5) The first-order homogeneous gaseous decomposition A 2.5R is carried out in an isothermal batch reactor at 2 atm with 20% inerts present, and the volume increases by 60% in 20 minutes. In a constant-volume reactor, find the time required for the pressure to reach 8 atm if the initial pressure is 5 atm, 2 atm of which consists of inerts. 6) The gas reaction 2A R+ 2S is approximately second order with respect to A. When pure A is introduced at 1 atm into a constant-volume batch reactor, the pressure rises 40% in 3 minutes. For a constant-pressure batch reactor find: 6.1) the time required for the same conversion. 6.2) The fractional increase in volume at that time