Explain sample of air contaminated with sulfur dioxide

Reference no: EM13234426

An environmental engineer analyzes a sample of air contaminated with sulfur dioxide. To a 500m mL sample of air at 700 torr and 38 degrees celsius, she adds 20.00 mL of 0.01017 M aqueous iodine, which reacts as follows:

2SO2 (g) + I2 (aq) +2H20 (l) ______> 2HSO41 -(aq) +2I1 -(aq) +4H+(aq)

The excess 12 (aq) left over from the above reaction with tirade with 11.37 mL of 0.0105 M thiosulfate (S2O32-) as follows: I2 (aq) + 2S2O32 -(aq) ---->2I1-(aq) +S4O62-(aq). What is the volume % of SO2 in the original sample.

Reference no: EM13234426

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