(a)(i) State the two main processes involved in the manufacture of oxygen from air (ii) Name the type of chemical bonding which exists between oxygen atoms ...

Assessment: WAEC SSCE - Chemistry - 1997 (Essay) Subject: Chemistry

Question 1 Report

(a)(i) State the two main processes involved in the manufacture of oxygen from air

(ii) Name the type of chemical bonding which exists between oxygen atoms in a molecule of oxygen

(b) What term is used to describe the relationship between oxygen and ozone (O\(_3\))?

Answer Details

(a)(i) The two main processes in obtaining oxygen from air are the liquefaction of air (compressing and cooling air until it liquefies) followed by the fractional distillation of the liquid air (nitrogen boils off first at -196°C, leaving oxygen).

(ii) The bonding between the two oxygen atoms in an O2 molecule is a covalent bond (a double covalent bond).

(b) The relationship between oxygen (O2) and ozone (O3) is allotropy; they are allotropes of the element oxygen.

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