Question

Consider the reaction 5Br−(aq)+BrO−3(aq)+6H+(aq)→3Br2(aq)+3H2O(l) The average rate of consumption of Br− is 1.16×10−4M/s over the first...

Consider the reaction

5Br−(aq)+BrO−3(aq)+6H+(aq)→3Br2(aq)+3H2O(l)

The average rate of consumption of Br− is 1.16×10−4M/s over the first two minutes. What is the average rate of formation of Br2 during the same time interval?

Express your answer with the appropriate units.

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Answer #1

5Br−(aq)+BrO−3(aq)+6H+(aq)→3Br2(aq)+3H2O(l)

rate of reaction in terms of Br- is

rate of reaction = (1/5)*average rate of consumption of Br-

rate of reaction in terms of Br2 is

rate of reaction = (1/3)*average rate of formation of Br2

equating both

(1/3)*average rate of formation of Br2 = (1/5)*average rate of consumption of Br-

average rate of formation of Br2 = (3/5)*average rate of consumption of Br-

= (3/5)*(1.16*10^-4 M/s)

= 6.96*10^-5 M/s

Answer: 6.96*10^-5 M/s

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