The oxidation of SO2 to H2SO4 in acid rain is thought to occur by the following mechanism. SO2(aq) + — Kinetics Chemistry Question
Question
The oxidation of SO2 to H2SO4 in acid rain is thought to occur by the following mechanism.
SO2(aq) + 2H2O(l) → HSO3–(aq) + H3O+(aq)
2HSO3–(aq) + O2(aq) → S2O72–(aq) + H2O(l)
S2O72–(aq) + 3H2O(l) → 2SO42–(aq) + 2H3O+(aq)
Which species in this mechanism can be given the following designations?
A.
reactant: SO2(aq); catalyst: H2O(l); intermediate: HSO3–(aq), H3O+(aq)
B.
reactant: SO2(aq); catalyst: HSO3–(aq); intermediate: S2O72–(aq)
C.
reactant: SO2(aq), H2O(l); catalyst: S2O72–(aq); intermediate: HSO3–(aq)
D.✓ Correct
reactant: SO2(aq), H2O(l); catalyst: none; intermediate: HSO3–(aq), S2O72–(aq)
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