Potassium dichromate (K2Cr2O7) is a bright orange salt that canbe converted to a blue-violet solution of Cr3+ ions. Under certainconditions, K2Cr2O7 reacts with ethanol (C2H5OH) to produce carbondioxide gas. The legal definition of intoxication is a bloodalcohol (C2H5OH) level of 0.08% by mass or higher. In a given case,35.48 mL of 0.05182 M K2Cr2O7 was required to titrate a 50.02 gsample of blood. From the tested sample, should the person bearrested for a DUI?
Assume that only the ethanol reacts with the potassiumdichromate.
C2+H5+OH (l) +K2Cr2O7 (aq) ---->CO2 (g) + K++ Cr3+
