Q 1: For an ideal mixed flow reaction (CSTR) the exit age distribution E(t) is given by
Q 2: The conversion XA and residence time data are collected for zero order liquid phase reaction in a stirred tank reactor, which of the following will be a straight line
Q 3: The dimensions of the rate constant for reaction 3A → B are (l/gmole)/min. Therefore, the reaction order is
Q 4: A first-order reaction A → B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the center of the pellet is much less than that at the external surface, the process is limited by
Q 5: The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 K to 500 K. Assuming transition state theory is valid, the value of E/R is
Q 6: The rate of increase of a number of bacteria under certain conditions is proportional to the number of bacteria. If the number doubles in 4 bows, how much increase in number of bacteria can be expected after 12 hours?
Q 7: For a first-order reaction taking place in an isothermal batch reactor, 80 % of the liquid reactant is converted to the product in 15 minutes. Calculate the space velocity required to achieve the same conversion in a plug flow reactor and in a back-mix flow reactor.
Q 8: The rate of a homogeneous liquid phase reaction is given as -\gamma_A=KC_A^2 . This reaction takes place with 50 % conversion in a back mix reactor. What will be the conversion if this reactor is replaced by a bigger one that is six times larger? All other conditions remain unchanged
Q 9: Liquid A decomposes in a batch reactor by second-order kinetics. If 50 % of A is converted in a five-minute run, how long it would take to reach 75% conversion?