Determining the Rate Law for a Multistep Mechanism
The decomposition of nitrous oxide. N20. is believed to occur by a two-step mechanism:
N20(g)→N2(g) + O(g) (slow)
N20(g) + O(g)→N2(g) + O2(g) (fast)
(a) Write the equation for the overall reaction, (b) Write the rate law for the overall reaction.
Ozone reacts with nitrogen dioxide to produce dinitrogen pentoxide and oxygen:
O3(g) + 2 NO2(g)→N2O5(g) + O2(g)
The reaction is believed to occur in two steps:
O3(g) + NO2(g) →NO3(g) + O2(g)
NO3(g) + NO2(g)→N2O5(g)
The experimental rate law is rate = k[O3][NO2]. What can you say about the relative rates of the two steps of the mechanism?
2 LawofThermodynamics This law was based on two observation: 1. Heat flows from hot to cold spontaneously. a. If there is work, then cold can flow to hot. 2. Work can be converted to heat completely but heat can’t completely be converted to work. a. The reverse process can never be observed because a hot object can never spontaneously cool down by converting its internal...