Review Topics] References] Use the References to access importantvalues if neede

Question

Review Topics] References] Use the References to access importantvalues if needed for this question. The folowing inatial rate data are for the reaction of hypochlorite ion with iodide ion in 1 M aqueous hydroxide solution Initial Rate, Ms1 1.93 10-3 3.85x10-3 3.85% 10-3 7.71x103 Experiment oCTo, M 4.18x10-3 18x10-3 8.36 10-3 8.36x10-3 [Ilo M 6.05 x 10-3 1.21x102 05% 10-3 1.21x10-2 Complete the rate law for this reaction in the box below Use the form k[Alm[BIn, where '1' is understood for m or n and concentrations taken to the zero power do not appear Don't enter 1 for m or n Rate From these data, the rate constant is M1s1

Explanation / Answer

from the given data  

reaction is first order with respect to OCl-

reaction is first order with respect to I-

rate law as follows

rate = K [OCl-] [I-]

K = rate / [OCl-] [I-]

K = 1.93 x 10-3 / [4.18 x 10-3][6.05 x 10-3]

K = 1.93 x 10-3 / 2.53 x 10-5

K = 76.3 M-1 s-1

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