WAEC 2014 CHEMISTRY SPECIMEN.
In addition to the fittings and reagents normally contained in a
chemistry laboratory,the following apparatus and materials will be
required by each candidates: (a) One burette of 50cm^3 Capacity
(b) One pipette, either 20cm^3 or 25cm^3. All candidates at one centre
must use pipettes of the same volume. These should be clean and free
from grease.
(c) The usual apparatus for titration;
(d) The usually apparatus and reagent for qualitative work including
the following with all reagents appropriately labelled;
(i) Red and blue litmus paper
(ii) Aqueous ammonia
(iii) Dilute hydrochloric acid
(iv) Dilute sodium hydroxide solution
(V) Barium chloride solution
(Vi) Dilute trioxonitrate (V) acid
(Vii) Silver trioxonitrate (V) acid
(e) glass rod
(f) filtration apparatus
(g) spatula
(h) two boiling tube
(i) Four test tubes
(j) methyl orange indicator
(k) wash bottle containing distilled/deionized water
(l) mathematical table/calculator
Candidates should be supplied with the following:
(a) 150cm^3 of hydrochloric acid solution in a corked flash or
bottle,labelled 'An'. These should all be the same containing 9.0cm^3
of concentrated HCL (about 36% w/w) per dm^3 of solution.
(b) 150cm^3 of Na2CO3 solution in a corked flask or bottle labelled
'Bn'. These should all be the same containing 5.3g of Na2CO3 per dm^3
of solution.
(c) One spatulaful of a uniform mixture of NH4CL and ZnSO4 in a
specimen bottle labelled 'Cn'. The components of the mixture should be
in the ratio 1:1 by mass.