The following mechanism has been proposed for the reaction between nitrogen mono
ID: 940950 • Letter: T
Question
The following mechanism has been proposed for the reaction between nitrogen monoxide and oxygen is the gas phase. step 1 fast. N_2O N_2O_2 step 2: slow: N_2O_2 + O_2 rightarrow 2NO_2 What is the equation for the overall reaction? Use the smallest integer coefficients possible. If a box is not needed, leave it blank. Which species acts as a catalyst? Enter the formula of any species that acts as a reaction intermediate? If non leave box blank. Complete the rate law for the overall reaction that is consistent with this mechanism. (Use the form k|A|^mlB|^n..., where 'I' is understood (so don't write it) for m, n etc.)Explanation / Answer
2NO ----> N2O2 (1)
N2O2---> 2NO (2)
N2O2+ O2---> 2NO2 (3)
Eq.2 and Eq.3 givesw 2N2O2 +O2 --- > 2NO + 2NO2 (4)
2* Eq.1 4NO---> 2N2O2 (5)
1) Addition of 4NO + O2---> 2NO+ 2NO2
2) intermediate is N2O2
3) d[N2O2]/dt= K1[NO]2- K2[N2O2]- K3[N2O2] [O2] = 0 ( [N2O2] is intermediate and its net rate = 0)
[N2O2] = K1[NO]2/ {K2+K3[O2]}
Rate is =K3[ N2O2] [O2] =K3K1[ NO]2/ { K2+ K3[O2]}
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