WAEC GCE 2018 Chemistry (Practical) Expo Questions And Answer – Nov/Dec Expo

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Waec Gce 2018 Chemistry Practical Expo Answer Runs

Waec Gce 2018 Chemistry Practical Expo Obj And Theory is available here. Are you searching for the Waec Gce 2018 Chemistry Practical Expo Answer Runs online? Then you’re on the right page. This page will provide you with the 2018 Waec Gce Chemistry Expo (Alt To Practical) Questions And Answers.

Here Is The Verified Waec Gce 2018/2019 Chemistry Expo (Alt To Practical) Questions And Answers – Nov/Dec Expo Runz Eduwapaz.com

1ai)
tabulate
Burette reading 1cm^3|1|2|3|
final reading|24.80|34.50|20.65|
initial reading|0.00|10.50|6.55|
volume of acid used 1cm^3|24.80|24.00|24.10|
1aii)
avaerage volume of acide used= VA=24.80+24.00+24.10)cm^3/n =3
VA=72.9/3=24.30cm^3
Hence average volume of A used = 24.30cm^3

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Question 3
a(i) Sodium is stored under paraffin oil to prevent its oxidation by atmospheric gases

(ii) desiccator lid must be greased with a thin layer of grease, to ensure an airtight seal.

(iii)

b(i)

(ii) Dip a rod in aqueous Ammonia and dip in a beaker containing the acids, only HCl produces dense white fumes of ammonium chloride

Waec Gce 2018 Chemistry Practical

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