When Suspected Drunk Drivers Are Tested with a Breathalyzer,the Alcohol

Multiple Choice

When suspected drunk drivers are tested with a Breathalyzer,the alcohol (ethanol) in the exhaled breath is oxidized to acetic acid with an acidic solution of potassium dichromate: 3 CH₃CH₂OH(aq) + 2 Cr₂O₇^-2 (aq) + 16 H⁺(aq) 3CH₃CO₂H(aq) + 4Cr⁺³(aq) + 11H₂O (l)
What is the value of E for the reaction when the concentrations of ethanol,acetic acid,Cr₂O₇^-2,and Cr⁺³,are 1.0M and the pH is 4.00? (Eº for this cell is 1.30V and the temperature is 298K) .
Equations to solve this problem are below.
Ε = ε° - lnQ
Ε = 1.30 - ln

A) 1.62 V
B) 1.30 V
C) 0.98 V
D) 1.24 V