2) Step 1: rate: fast Step 2: N2O2 + Br2 2NOBr rate: slow Overall: 2NO + Br2 2NOBr a) Find Step 1. b) If it was possible to increase the rate of step 1, how would this affect the overall reaction rate? c) Identify any reaction intermediates. 3) Why does the following reaction have a multi-step mechanism? 3FeCl2 + KNO3 + 4HCl 3FeCl3 + NO + 2H2O + KCl 4) PE Progress of Reaction a) How many steps make up the reaction mechanism? b) State whether each step is endothermic or exothermic. c) Is the overall reaction endothermic or exothermic? d) Which is the rate determining step? How can you tell? e) Label H for the overall reaction on the curve. f) On the curve, label an A wherever there is an activated complex and an I wherever there is a reaction intermediate. How do the two differ? 5) Consider the following mechanism: Step 1: NO2 + Mn NO2Mn Step 2: Step 3: NO3 + CO NO2 + CO2 Overall: NO2 + CO NO + CO2 a) Determine Step 2. b) Identify a catalyst.
2) Step 1: rate: fast Step 2: N2O2 + Br2 2NOBr rate: slow Overall: 2NO + Br2 2NOBr a) Find Step 1. b) If it was possible to increase the rate of step 1, how would this affect the overall reaction rate? c) Identify any reaction intermediates. 3) Why does the following reaction have a multi-step mechanism? 3FeCl2 + KNO3 + 4HCl 3FeCl3 + NO + 2H2O + KCl 4) PE Progress of Reaction a) How many steps make up the reaction mechanism? b) State whether each step is endothermic or exothermic. c) Is the overall reaction endothermic or exothermic? d) Which is the rate determining step? How can you tell? e) Label H for the overall reaction on the curve. f) On the curve, label an A wherever there is an activated complex and an I wherever there is a reaction intermediate. How do the two differ? 5) Consider the following mechanism: Step 1: NO2 + Mn NO2Mn Step 2: Step 3: NO3 + CO NO2 + CO2 Overall: NO2 + CO NO + CO2 a) Determine Step 2. b) Identify a catalyst.