8 January 2019

WAEC GCE Chemistry Practical Questions 2019 | Check Answers Here.

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WAEC GCE Chemistry Practical Questions 2019 | Check Answers Here.

https://www.educationinfo.com.ng/2019/01/waec-gce-chemistry-practical-questions-2019-chck-answers-here-corresct.html


WAEC | WAEC GCE Chemistry Practical Questions 2019… This page contains list of GCE Chemistry labouratory apparatus that will be used for the Nov./Dec. 2019 Geography Practical Examination. Stay focus and study through.
WAEC GCE Chemistry Practical Questions 2019
The West African Examinations Council (WAEC) is an examination board that con9ducts the West African Senior School Certificate Examination, for University and Jamb entry examination in West Africa countries. … In a year, over three million candidates registered for the exams coordinated by WAEC.

WAEC GCE Chemistry Questions 2019

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3ai)
SO2(g)
3aii)
A->To dry the gas
B->To detect the type of gas that was dried
3aiii)
A->P4O10
B->KMno4/Blue litmus paper
3bi)
-It is an acid that turns moist blue litmus paper red
-It is colourless and poisonous gas with an irritating smell
3bII)
The irritating smell
3bii)
Downward delivery
Chlorine gas (Cl2(g))
3ci)
I-T,U,V
II-X,Y,Z
3cii)
W
3ciii)
I-U
II-V

(2a)
Inference: SO3^2- suspected

(2b)
(i) Inference: insoluble salt

(ii) Inference: SO3^2- confirmed

(iii) Inference: Cu2 suspected
Cu2 confirmed

(iv) Obseravation:
-Blue gelatineous precipitate
-Precipitate dissolves

(2c)
(i) CuSO3
(ii) Copper (ii) trioxosulphate (iv)

1a)
i) TABULATE
burette reading/cm^3 ___ 1 ____ 2 _____ 3
final reading__________ 39.5 __ 29.80 __ 19.40
initial reading ______ 19.55 __ 10.50 ___ 0.0
volume of E used _____ 19.70 ___ 19.30 __ 19.40


ii) Na2CO3(aq)^2HNO3(aq) — 2NaNO3(aq) + CO2(g) + H2O(c)
average volume of E used = 19.70+19.30+19.40/3
=19.47cm^3

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