Question

Que.3. Identify the species being oxidized and reduced in each of the following reactions. [3M]
(a) Cr+ + Sn4+ →Cr3+ + Sn2+
(b) 3 Hg2+ + 2 Fe (s) → 3 Hg + 2 Fe3+
(c) 2 As (s) + 3 Cl2 (g) → 2 AsCl3

Answer 1

Answer:

(a) oxidised => Cr+

reduced => Sn4+

(b) oxidised => Fe

reduced=> Hg2+

(c) oxidised => As

reduced => Cl2

Answer 2

Answer:

(a) Cr+ here is being oxidized in the given reaction and Sn4+ is being reduced here.

(b) Fe here is being oxidized in the given reaction and Hg2+ is being reduced here.

(c) As   here is being oxidized in the given reaction and Cl2 is being reduced here.

Redox is a type of chemical reaction in which the oxidation states of atoms are changed. Redox reactions are characterized by the actual or formal transfer of electrons between chemical species, most often with one species undergoing oxidation while another species undergoes reduction.