The oxidation of cyanide ion to cyanate ion by hypoiodite is proposed to take place by the following — Kinetics Chemistry Question
Question
The oxidation of cyanide ion to cyanate ion by hypoiodite is proposed to take place by the following mechanism. If the pH is greater than either the pKa of HOI or of HCN, what is the rate law?
OI– + H+ ⇌ HOI fast
CN– + HOI ⇌ ICN + OH– fast, unfavorable
ICN + OH– → HOCN + I– slow
HOCN + OH– → OCN– + H2O fast
A.
Rate = k[CN–][OI–]
B.✓ Correct
Rate = k[CN–][OI–][H+]
C.
Rate = k[CN–][OI–][OH–]
D.
Rate = k[CN–][OI–][OH–]2
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