An aqueous ethylene glycol (HOCH, CH, OH, FW = 62.07 g/mol) solution with a mass of 220.9 mg is titrated with 33.7 mL of 0.0839 M Ce+ in 4 M HCIO,. The solution is held at 60 °C for 15 min to oxidize the ethylene glycol to formic acid ( HCO,H) and carbon dioxide. The excess Ce+ is titrated with 11.03 mL of 0.0447 M Fe2+ to a ferroin end point. What is the mass percent of ethylene glycol in the unknown solution? 9.2 mass percent = |% Incorrect

Chemistry: Principles and Reactions
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Chapter4: Reactions In Aqueous Solution
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An aqueous ethylene glycol (HOCH, CH, OH, FW = 62.07 g/mol) solution with a mass of 220.9 mg is titrated with 33.7 mL
of 0.0839 M Ce+ in 4 M HCIO,. The solution is held at 60 °C for 15 min to oxidize the ethylene glycol to formic acid (
HCO,H) and carbon dioxide. The excess Ce+ is titrated with 11.03 mL of 0.0447 M Fe2+ to a ferroin end point. What is the
mass percent of ethylene glycol in the unknown solution?
9.2
mass percent =
|%
Incorrect
Transcribed Image Text:An aqueous ethylene glycol (HOCH, CH, OH, FW = 62.07 g/mol) solution with a mass of 220.9 mg is titrated with 33.7 mL of 0.0839 M Ce+ in 4 M HCIO,. The solution is held at 60 °C for 15 min to oxidize the ethylene glycol to formic acid ( HCO,H) and carbon dioxide. The excess Ce+ is titrated with 11.03 mL of 0.0447 M Fe2+ to a ferroin end point. What is the mass percent of ethylene glycol in the unknown solution? 9.2 mass percent = |% Incorrect
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