KCET 2014 Chemistry Solved Paper

Question : 56 of 60

Marks: +1, -0

For Cr2O72−+14H++6e−→2Cr3+ +7H2O;E°=1.33V At[Cr2O72−]=4.5 millimole, [Cr3+] = 15 millimole, E° is 1.067 V. The pH of the solution is nearly equal to