Question

2) a) Briefly describe what is meant by the steady-state approximation. tha Stredy state approximation says that we can assime the reaction is taking place ander Steady state conditions b) Consider the following reaction scheme: Express the net rate of change for B. 10+ mate = -d/A] + - + [6] + - d[e] of change dt dt at c) Provide a detailed reason why D may be quite abundant initially, but virtually gone after several hours. i n niin4 Sorm

Answer 1

a) Steady state approximation takes a assumption that the rate of change of concentration of intermediate in a complex reaction remain constant. It helps in estimating the overall reaction rate of a multi-step reaction.

b)

dB = K, [A] - Kq [B]+ k., [e] - k3 [B] tk-3[D] zo

c) when rate of formation of D i.e. K_{​​​​​​3} is very small and rate of formation of B i.e. K_{​​​​​​2} is large then initially D is formed but afterwards D will Concentration will be start decreasing and finally vanishes.