Question

(a) Choose the correct answer from the choices A,B,C and D:

(i) The property which is characteristic of an electrovalent compound is that:

A. it is easily vaporized

B. it has a high melting point

C. it is a weak electrolyte,

D. it often exists as a liquid.

(ii) When a metal atom becomes an ion:

A. It loses electrons and is Oxidized

B. It gains electrons and is reduced,

C. It gains electrons and is oxidized,

D. it loses electrons and is reduced.

(b) Identify the following reactions as either oxidation or reduction:

(i) O + 2e^- → O^2-

(ii) K – e^- → K⁺

(iii) Fe³ + e^- → Fe²⁺

Answer 1

(a)(i) B

(ii) A

(b) (i) Reduction

(ii) Oxidation

(iii) Reduction