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April 18, 2014

Homework Help: Chemistry

Posted by Mary on Friday, March 26, 2010 at 9:01pm.

Alcohol levels in blood can be determined by a redox titration with potassium dichromate according to the balanced equation:

C2H5OH(aq) + 2Cr2O7(-2) (aq) + 16H+(aq)---> 2CO2 (g) + 4 Cr3(+)(aq) + 11H2O (l)
What is the blood alcohol level in mass perecent if 8.76 mL of 0.04988 M K2Cr2O7 is required for titration of a 10.0002 g sample of blood?

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