Question

(a) Explain the terms 'oxidation' and 'reduction' with reference to an atom or ion.

(b) State which of the following are oxidation reactions and which are reduction reactions:

(i) Cu ➞ Cu²⁺ + 2e⁻
(ii) Cu²⁺ + 2e⁻ ➞ Cu
(iii) Sn⁴⁺ + 2e⁻ ➞ Sn²⁺
(iv) 2Cl- ➞ Cl₂ + 2e⁻
(v) Fe²⁺ ➞ Fe³⁺ + le⁻
(vi) X + 2e⁻ ➞ X²⁻​

Answer 1

Answer:

Oxidation is the process of loss of electrons or an increase in oxidation state by a molecule, atom, or ion.

Reduction is the process of gain of electrons or a decrease in oxidation state by a molecule, atom, or ion. Oxidant is the substance which gains the electrons.

(i) oxidation

(ii) reduction

(iii) reduction

(iv) oxidation

(v) oxidation

(vi) reduction

Explanation:

hope it will help U

Answer 2

(a) Oxidation: Loss of one or more electrons by an atom or ion is called oxidation.

Reduction: Gain of one or more electrons by an atom or ion is called reduction.

(b.i) Reduction reaction

(ii) Reduction reaction

(iii) Oxidation reaction

(iv) Reduction reaction

(v) Reduction reaction

(vi) Oxidation reaction