Example 4.1 examined the equilibrium distribution of hydrocarbon compounds within a single carbon number (C₅). In reality, cracking reactions to ethylene, propylene and other light alkenes and alkynes will have a significant effect on the yield of a cracking process. 1. What is the effect of including C₂ and C₃ compounds on the equilibrium distribution? 2. What is the effect of including coke (carbon) as well as the C₂ and C₃ compounds? 3. What do these results tell you about cracking processes?

Data from example 4.1

When heavy oils are cracked in a catalytic or thermal cracking process, lighter hydrocarbon compounds are formed. Most  cracking processes on heavy oil feeds form products with carbon numbers ranging from two to greater than twenty. How  does the equilibrium distribution of hydrocarbon compounds with five carbons (C₅ compounds) change as the temperature  of the cracking process is increased at 200kPa?