Chapter 8: Multiple Reactions
Additional Homework Problems
CDP8-EB
A mixture of 50% A, 50% B is charged to a constant-volume batch reactor in which equilibrium is rapidly achieved. The initial total concentration is 3.0 mol/dm3.
- Calculate the equilibrium concentrations and conversion of A at 330 K for the reaction sequence
Reaction 1: A + B C + D Kc1(330 K)=4.0, Kc1(350 K)=2.63
Reaction 2: C + B X + Y Kc2(330 K)=1.0, Kc2(350 K)=1.51
- Suppose now the temperature is increased to 350 K. As a result, a third reaction must now be considered in addition to the reactions above:
Reaction 3: A + X Z Kc3(350 K)=5.0 dm3/mol
Calculate the equilibrium concentrations, conversion of A and overall selectivities CX, DZ, and YZ.
- Vary the temperature over the range 300 to 500 K to learn the effect of selectivities CX, CZ, and YZ on temperature.
HR1= -20,000 J/mol A HR2= +20,000 J/mol B
HR3 -40,000 J/mol A