For the Following Reaction, Predict the PH If the Pressure $~~~~~~~~$

For the following reaction, predict the pH if the pressure of O₂ is 3.00 atm and the bromide ion concentration is 2.10 M. The measured cell potential (E_cell) was 0.100 V.


Half reactions:
$~~~~~~~~$ E ^$\circ$ = +1.077 V
$~~~~~~~~$ E ^$\circ$ = +1.229 V

A) 4.31
B) 3.17
C) 2.59
D) 1.32
E) 0.66