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Use the chemical reactions shown below to answer the following questions. (1 pt)

ID: 821779 • Letter: U

Question

Use the chemical reactions shown below to answer the following questions. (1 pt)

IO3-(aq) + 5 I-(aq) + 6 H+(aq) ? 3 I2 (aq, brown/yellow) + 3 H2O (l)

I2 (aq, brown/yellow) + 2 S2O32-(aq) ? 2 I-(aq, colorless) + S4O62- (aq)

a. What is the stoichiometric relationship between IO3- and I2?

b. What is the stoichiometric relationship between I2 and S2O3 2-?

c. What is the stoichiometric relationship between IO3- and S2O32-?

d. How will knowing these relationships help you calculate the molarity of the Na2S2O3 solution

in Part 1 of this experiment?

Explanation / Answer


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