Writing rate law: the 2 questions
Posted: Mon Feb 16, 2015 6:09 pm
Hey,
I have 2 questions about writing the rate law:
1. I noticed that the examples used in lecture were with reactants that had 1 as its stoichiometric coefficient. How do you write the rate law when a reactant has 2 (or a number other than 1) as a coefficient? Example: 2A + B --> 2C
2. My second questions pertains to reaction mechanisms:
a) For the example No2 (g) + CO2 (g) --> NO (g) + CO2 (g). You stated that step 1 is the rate determining step because of the given experimental rate law (since the slowest step determines the rate of overall reaction). For similar questions where you are asked to find the rate determining step, will the experimental rate law be given? If not, how can one tell which intermediate reaction is the rate determining step?
b) My second question is more of a clarification. Since the slowest step determines the rate of the overall reaction. Is the reactant(s) in the overall rate law of a reaction the reactants of the rate determining step? Is this always the case?
***I apologize for the long questions. I am just really curious ^_^***
I have 2 questions about writing the rate law:
1. I noticed that the examples used in lecture were with reactants that had 1 as its stoichiometric coefficient. How do you write the rate law when a reactant has 2 (or a number other than 1) as a coefficient? Example: 2A + B --> 2C
2. My second questions pertains to reaction mechanisms:
a) For the example No2 (g) + CO2 (g) --> NO (g) + CO2 (g). You stated that step 1 is the rate determining step because of the given experimental rate law (since the slowest step determines the rate of overall reaction). For similar questions where you are asked to find the rate determining step, will the experimental rate law be given? If not, how can one tell which intermediate reaction is the rate determining step?
b) My second question is more of a clarification. Since the slowest step determines the rate of the overall reaction. Is the reactant(s) in the overall rate law of a reaction the reactants of the rate determining step? Is this always the case?
***I apologize for the long questions. I am just really curious ^_^***