WAEC Chemistry Practical Answers 2026/2027

WAEC Chemistry Practical Answers 2026/2027: For the WAEC Chemistry practical exam, the paper typically requires candidates to complete questions on volumetric analysis (titration), qualitative analysis (salt/solution analysis), and general questions on apparatus and basic chemical processes.

WAEC Chemistry Practical Answers 2026/2027

Number 3

(3a)
Complete the table

Under; Apparatus
(i) Measuring cylinder (or Pipette / Burette)
(ii) Clay triangle
(iii) Crucible
(iv) Bomb calorimeter

Under; Use
(i)For measuring specific volume of a liquid
(ii)To support a crucible being heated by a Bunsen burner
(iii)As container for melting and heating to a very high temperature
(iv)To measure the heat of combustion of a particular reaction

(3b)
(i)PbSO⁴ (Insoluble)
(ii)PbCl² (slightly soluble in cold water, soluble in hot water
(iii)Pb(NO³)² (soluble)

Order; PbSO⁴ <PbCl² <Pb (NO³)²

(3c)
(i)KNO³(aq); No effect. It is a neutral salt formed from strong acid (HNO³) and a strong base (KOH)
(ii)K²CO³; turns red litmus blue. It is a basic salt formed from a weak acid (H²CO³) and strong base (KOH)
(iii)Al²(SO⁴)³(aq); turns blue litmus red. It is an acidic salt; aluminium ions undergo hydrolysis in water to produce H+ ions

====================