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Unit 7: Kinetics. Integrated Rate Laws Day 4. Unit 7: Kinetics. Method of Initial Rates (Review). Determine the rate equation for the reaction of CO and NO 2 to produce CO 2 and NO at 540 K. Determine the rate constant. Determine the initial rate of reaction when [CO]= 3.8 x 10 -4
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Unit 7: Kinetics Integrated Rate Laws Day 4
Unit 7: Kinetics Method of Initial Rates (Review) Determine the rate equation for the reaction of CO and NO2 to produce CO2 and NO at 540 K. Determine the rate constant. Determine the initial rate of reaction when [CO]= 3.8 x 10-4 and [NO2]= 0.65 x 10-4
Unit 7: Kinetics Zero Order Reactions Reactant conc. has no effect on rate H2 + Cl2 2HCl Zero Order Reaction
Unit 7: Kinetics First Order Reactions -Rate slows over time -Nuclear decay processes are almost always first order! - H2O2 H2O + O2 is a first order decomposition
Unit 7: Kinetics Second Order Reactions -Rate REALLY slows over time
Unit 7: Kinetics Integrated Rate Laws Sometimes, predictions must be made about time/concentration… Ex: How much of reactant A will remain after 10 minutes? Ex: If the original [A]= 2 M, how long will it take for [A]= 0.5 M? for First Order Reactions: for Second Order Reactions: for Zero Order Reactions:
Unit 7: Kinetics Integrated Rate Laws Cyclopropane, an old school anesthetic, decomposes to form propene where the rate=k[cycloprop] and k=2.42 h-1at 500oC. If the initial concentration of cyclopropane is 0.050 mol/L, how much time must elapse for the concentration to drop to 0.01 mol/L?
