Of the following reactions, only one is a redox reaction. Identify it
(a) Ca(OH)₂ + 2HCl ⟶CaCl₂ + 2H₂O
(b) BaCl₂2 +MgSO₄ ⟶BaSO₄ +MgCl₂
(c) 2S₂O₇²⁻ + 2H₂O ⟶ 4SO²⁻₄ + 4H⁺
(d) Cu₂S+ 2FeO ⟶ 2Cu + 2Fe + SO₂
Answers
Answered by
0
(a) Ca(OH)₂ + 2HCl ----> CaCl₂ + 2H₂O
Explanation:
An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.
Ca(OH)₂ + 2HCl ----> CaCl₂ + 2H₂O
This is a redox reaction.
2 Cl^0 - 2 e- → 2 Cl^1I (oxidation)
2 Cl^0 + 2 e- → 2 Cl^-1 (reduction)
Cl2 is both an oxidizing and a reducing agent.
Option A is the answer.
Similar questions