Redox Reactions · JEE Main previous year questions

2004 1 question

1. Q1842004 · 24 Apr 2004 · Shift 1

   The $E_{M^{3+}/M^{2+}}^{\circ }$ values for Cr, Mn, Fe and Co are – 0.41, +1.57, + 0.77 and +1.97 V respectively. For which one of these metals the change in oxidation state from +2 to +3 is easiest?

   1. A.Fe
   2. B.Mn
   3. C.Cr
   4. D.Co
   Show answer

   Answer: C