For the reaction below (the one you will be studying during this lab), write an expression for the reaction rate in terms of changing concentration over time for each species in the overall reaction (one is given as an example).   S2O82- (aq) + 3I- (aq) ⇌ 2SO42- (aq) +I3- (aq) What does it mean if a concentration change over time is written as being positive?

World of Chemistry, 3rd edition
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ISBN:9781133109655
Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
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Chapter17: Equilibrium
Section: Chapter Questions
Problem 38A
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2.    For the reaction below (the one you will be studying during this lab), write an expression for the reaction rate in terms of changing concentration over time for each species in the overall reaction (one is given as an example).  

S2O82- (aq) + 3I- (aq) ⇌ 2SO42- (aq) +I3- (aq)

What does it mean if a concentration change over time is written as being positive?

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