A proposed mechanism for a reaction is:
(i) A + B2 = AB2 Ea1 = 12 kJ/mol ƒ´H1 = 3 kJ/mol
(ii) AB2 + C2 = ABC + BC Ea2 = 30 kJ/mol ƒ´H2 = 5.2 kJ/mol
(iii) ABC + B2 = AB2 + BC Ea3 = 10 kJ/mol ƒ´H3 = -7.8
kJ/mol
a) Which is the rate determining step? Explain why. (2 marks)
b) What is the overall equation for this reaction (1 marks)
c) Name a reaction intermediate (1 mark)
d) Draw a completely labeled energy diagram to scale for the overall reaction. Clearly show deltaHr
and Ea (3 marks)