The following mechanism has been proprosed; i.HNO2+H+<--->H2O+NO+ (fast k1) ii.
ID: 959109 • Letter: T
Question
The following mechanism has been proprosed;
i.HNO2+H+<--->H2O+NO+ (fast k1)
ii. NH4+<-->NH3+H+ (fast k2)
iii. NO+ + NH3-->NH3NO+ (slow k3)
iv. NH3NO+--> H2O+H++ N2
a.Write the net overall equation?
b.The NH4+ ion is acting as the _______ in the reaction ?
c. the NO+ ion is acting as the _____ in the reaction?
d. The NH3 molecule is acting as the _____ in the reaction?
e. The H+ ion is acting as the _____ in the reaction?
f. Write the rate law for the rate determining step?
g. Write the rate law for the overall reaction?
Explanation / Answer
a.Write the net overall equation?
add all equations
HNO2+H+<--->H2O+NO+ (fast k1)
NH4+<-->NH3+H+ (fast k2)
NO+ + NH3-->NH3NO+ (slow k3)
NH3NO+--> H2O+H++ N2
overall --> HNO2+ NH4+ --> 2H2O + H+ + N2
b.The NH4+ ion is acting as the _______ in the reaction ?
reactant, since it is in the left side
c. the NO+ ion is acting as the _____ in the reaction?
intermediate, since it is not in the reactants/products in the overall reaction
d. The NH3 molecule is acting as the _____ in the reaction?
intermediate, since it is not in the reactants/products in the overall reaction
e. The H+ ion is acting as the _____ in the reaction?
product, since it appear to the right of th eeuqation
f. Write the rate law for the rate determining step?
determing step --> slow step
NO+ + NH3-->NH3NO+ (slow k3)
RATE = K*[NO+][NH3]
g. Write the rate law for the overall reaction?
RATE = K*[NO+][NH3]
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