Question
Standard reduction potentials of the half-reactions are given below.
F2 (g) +2e- → 2F- (aq) ; Eo = +2.85 V
Cl2 (g) +2e- →2Cl- (aq) ; Eo = +1.36V
Br2 (l) +2e- → 2Br- (aq) ; Eo = +1.06 V
I2 (s) +2e- →2I- (aq); Eo = +0.53 V
The strongest oxidising and reducing agents respectively are
-
F2 and I-
-
Br2 and Cl-
-
Cl2 and Br-
-
Cl2 and I2
Solution
A.
F2 and I-
Higher the value of standard reduction potential, stronger will be the oxidising agent. Therefore, F2 will act as stronger oxidising agent.
Similarly, lower the value of standard reduction potential stronger will be the reducing agent. Therefore, I- will act as strongest reducing agent.
