WAEC GCE Chemistry 2022 Questions and Answers
The west African examination council (WAEC) has scheduled waec gce chemistry 2022 paper to kick off by 13th December 2022.
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Waec gce chemistry question 2022
Waec gce chemistry Objective Answer 2022
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Waec gce chemistry theory answer 2022
A solution of ammonia is basic, hence it turns red litmes blue.
A catalyst, concentrated tetraoxosulphate(vi) acid must be used to speed up the reaction.
CaC₂(s) + H₂0(l) —> C₂H₂(g) + CaO(s)
It is used in the production of oxy-acetylene flame used for welding.
(iii) Saturation level.
(i) Rusting requires moisture but burning does not.
(ii) Burning requires heat while rusting does not.
The K₂Cr₂O7 is reduced.
Hydrogen gas is geven off with the formation of iron(11) Chloride (green).
(i) Carbon(1V)Oxide, CO₂
(iii) Heat energy
CxHy + (x + Y/A) —-> xC0₂ + y/₂ H₂0.
CH4 + 20₂ —-> CO₂ + 2H₂0
Law of constant composition which states that equal volumes of all gases contain equal quantities of Particles at constant temperature and pressure.
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Waec gce chemistry practical answer 2022
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