The reaction 2I-(aq) + H3AsO4(aq) + 2H+(aq) --- I2(aq) + H3AsO3(aq) + H2O(l) proceeds via the mechanism below.

fast in both directions,

with rate constants k1 and k-1

Step 2

(irreversible):H4AsO4+ + I- ---> H3AsO3 + HOI slow, with rate constant k2

Step 3

(irreversible): HOI + I- + H+ ---> I2 + H2Ofast, with rate constant k3

A.Rate = k [I-]2 [H3AsO4] [H+]2

B.Rate = k [I-] [H3AsO4]

C.Rate = k [I-] [H+]2

D.Rate=k [H3AsO3] / ([I-]2 [H3AsO4] [H+]2)

E.Rate = k [I-] [H3AsO4] [H+]

F.Rate=k [I-]2 [H3AsO4] [H+]2 / [H3AsO3]

G.Rate = k [I-] [H3AsO4] / [H+]

H.Rate = k [I-] [H3AsO4] [H+]2

I.Rate = k [I-]2 [H+]

J.Rate = k [I-]2 [H3AsO4] [H+]

K.Rate = k [H3AsO4] [H+]

L.Rate = k [I-]2 [H3AsO4]

MORE THAN ONE CHOICE