Compromise Between Rate Of Reaction And Product Yield

Question 1

Compromise made when reaction is exothermic

Answer 1

-low temperature increases yield at equilibrium as favours exothermic reaction
-high temperature increases rate of reaction meaning more product made in shorter amount of time but is expensive to burn fuel to increase temp (increases energy costs)
-compromise must be made that maximises yield while maintaining high rate, can use a catalyst to increase rate further

Question 2

Two factors to take into account in industrial processes

Answer 2

-yield of product
-rate of reaction

Question 3

Why would product be removed from equilibrium before reaches maximum concentration

Answer 3

The equilibrium position will shift to the right
-removal of product decreases rate of back reaction
-time to reach equilibrium may be too long
-unreacted reactants can be recycled

Question 4

Reason for not increasing pressure

Answer 4

Increases construction and running costs