When a reaction mechanism is given, the rate law can be determined using the slow step in the reaction mechanism.
▪ rate law only involves the reactants
▪ the coefficients of the reactants in the slow step are the order of the reaction with respect to that reactant
▪ Rate Law has a general form of:
Nitrogen(II) oxide, NO, reacts with hydrogen, H2, according to the following equation:
2 NO + 2 H2 ⟶ N2 + 2H2O
What would the rate law be if the mechanism for this reaction were:
2 NO + H2 ⟶ N2 + H2O2 (slow)
H2O2 + H2 ⟶ 2H2O (fast)
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Our data indicates that this problem or a close variation was asked in Chemistry - OpenStax 2015th Edition. You can also practice Chemistry - OpenStax 2015th Edition practice problems.