1. A student measured the amount of dissolved oxygen in river water sample using Winkler titration method. The titration reaction is described by the following equation. I + 2Na,S,O, 2Nal + Na,S,O, 2 (g) 3 (aq) 6 (aq) a. Calculate the concentration of the iodine solution in given that 8.0 cm' of the 0.03 M sodium thiosulfate solution were required in the titration for complete reaction with 60 cm' portions of the iodine solution.
1. A student measured the amount of dissolved oxygen in river water sample using Winkler titration method. The titration reaction is described by the following equation. I + 2Na,S,O, 2Nal + Na,S,O, 2 (g) 3 (aq) 6 (aq) a. Calculate the concentration of the iodine solution in given that 8.0 cm' of the 0.03 M sodium thiosulfate solution were required in the titration for complete reaction with 60 cm' portions of the iodine solution.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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I want answer for part A only
Transcribed Image Text:1. A student measured the amount of dissolved oxygen in
river water sample using Winkler titration method.
The titration reaction is described by the following
equation.
I + 2Na,S,O,
2Nal + Na,S,O.to)
2 (g)
(aq)
(aq)
a. Calculate the concentration of the iodine solution in
given that 8.0 cm' of the 0.03 M sodium thiosulfate
solution were required in the titration for complete
reaction with 60 cm' portions of the iodine solution.
b. For every 1 mole of oxygen gas (O,) in the water
sample 2 moles of iodine (I,) are liberated in this
experiment. Calculate the concentration of dissolved
oxygen in the water sample in ppm. (Hint: don't use
the equation provided in the handout to calculate the
concentration of the dissolved oxygen)
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