A) Inversion of sucrose in the presence of acid
B) Acid-catalyzed hydrolysis of ethyl acetate
C) Hydrolysis of tertiary butyl halide using alkali
D) Oxidation of \[{{I}^{-}}\]ion by \[{{S}_{2}}O_{8}^{2-}\] ion
Correct Answer: D
Solution :
[d] It is a second order reaction, first order both w.r.t \[{{S}_{2}}{{O}_{8}}^{2-}\] and\[{{I}^{-}}\]. \[\therefore r=k[{{S}_{2}}{{O}_{8}}^{2-}][{{I}^{-}}]\] All other options are of first order reaction.
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