Part 1 A solution of sodium thiosulfate,Na 2 S 2 O 3 , is 0 0932 M 25 00 mL ofthis solution reacts with 15 37 mL of I 2 solution What is the molarity of the I 2 solution 2(Na 2 S 2 O 3 ) I 2 Na 2 S 4 O 6 2(NaI) Part 2 As 2 O 3 5(H 2 O) 2I 2 2(H 3 AsO 4 ) 4HI33 35 mL of theI 2 solution from above is...

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Part 1: A solution of sodium thiosulfate,Na 2 S 2 O 3 , is 0.0932 M. 25.00

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Question:

Part 1: A solution of sodium thiosulfate,Na₂S₂O₃, is 0.0932 M. 25.00 mL ofthis solution reacts with 15.37 mL of I₂ solution.What is the molarity of the I₂ solution?

2(Na₂S₂O₃) + I₂?Na₂S₄O₆ + 2(NaI)

Part 2:As₂O₃ + 5(H₂O) + 2I₂ ?2(H₃AsO₄) + 4HI33.35 mL of theI₂ solution from above is required to titrate asample containing As₂O₃. Calculate the massof As₂O₃ (197.8 g/mol) in thesample.