Question

# Consider the reaction 5Br−(aq)+BrO−3(aq)+6H+(aq)→3Br2(aq)+3H2O(l) The average rate of consumption of Br− is 1.76×10−4 M/s over the...

Consider the reaction 5Br−(aq)+BrO−3(aq)+6H+(aq)→3Br2(aq)+3H2O(l) The average rate of consumption of Br− is 1.76×10−4 M/s over the first two minutes.

What is the average rate of formation of Br2 during the same time interval?

What is the average rate of consumption of H+ during the same time interval?

1)

Rate of reaction in terms of Br-:

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

Rate of reaction in terms of Br2:

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

use:

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

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

= (3/5)*1.76*10^-4 M/s

= 1.06*10^-4 M/s

2)

Rate of reaction in terms of Br-:

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

Rate of reaction in terms of H+:

rate of reaction = (1/6)*rate of consumption of H+

use:

(1/6)*rate of consumption of H+ = (1/5)*rate of consumption of Br-

rate of consumption of H+ = (6/5)*rate of consumption of Br-

= (6/5)*1.76*10^-4 M/s

= 2.11*10^-4 M/s

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