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The questions asks us to: Determine the molar concentration of I- in a reaction mixture. The reaction was as follows (data):

20 mL of .1 M KI

0 mL of .1 M KCl

10 mL of .003 M Thiosulfate

20 mL of .10 M Persulfate

I did the following:

20 ml I- x (1 L / 1000 mL) = .02 L I-

.02 L I- x (.1 mol / 1 L) = .002 mol I-

.002 mol / .05 L solution (20 mL + 0 mL + 10 mL + 20 mL) = .04 M I-

Little rusty, wanted to make sure I did this right.

Any help will be greatly appreciated!

20 mL of .1 M KI

0 mL of .1 M KCl

10 mL of .003 M Thiosulfate

20 mL of .10 M Persulfate

I did the following:

20 ml I- x (1 L / 1000 mL) = .02 L I-

.02 L I- x (.1 mol / 1 L) = .002 mol I-

.002 mol / .05 L solution (20 mL + 0 mL + 10 mL + 20 mL) = .04 M I-

Little rusty, wanted to make sure I did this right.

Any help will be greatly appreciated!

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