*******BIG TEST REVIEW IN CHEMISTRY**** PLEASE SHOW ALL STEPS AND WORK!! 5) For

Question

*******BIG TEST REVIEW IN CHEMISTRY****

PLEASE SHOW ALL STEPS AND WORK!!

5) For the reaction shown below, what is the relationship between the rate of formation of Br2 and the rate of reaction of Br over the same time period? CIO2^-(aq) + 4 Br aq) +4 H (aq) right arrow CI-(aq) +2 Br2(aq) +2 H2O(l) A) rate of formation of Br2 = 1/2 x rate of reaction of Br B) rate of formation of Br2 = 1/4 X rate of reaction of Br C) rate of formation of Br2 = 2 X rate of reaction of Br D) rate of formation of Br2 = 2 X rate of reaction of Br

Explanation / Answer

ClO2-(aq) + 4 Br-(aq) + 4H+(aq) ----> 2 Br2(aq) + 2 H2O(l)

Rtae of reaction = dx/dt = -d[ClO2-]/dt = 1/4[-d[Br-]/dt] = 1/4[-d[H+]/dt] = 1/2[+d[Br2]/dt] = 1/2[+d[H2O]/dt]

w.r.t Br2 , Br-

1/2[+d[Br2]/dt] = 1/4[-d[Br-]/dt]

from this

Rate of formation of Br2 = 1/2*Rate of reaction of Br-

Answer : A

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