Here is the neco chemistry practical answers for 2021. More answers will be posted, check back in few minutes and refresh.
Chemistry practical answers 2021
(1a)
Tabulate
Volume of pipette used=25cm3.
Indicator used= Methyl orange
Under Titration, Rough, 1st, 2nd, 3rd,
Final burette reading; |25.00| |23.40| |23.50| 23.60|
Initial burette reading; |0.00| |0.00| |0.00| |0.00|
Volume of A used; |25.00| |23.40| |23.50| |23.60|
(1ai)
Average volume of Acid used=23.40+23.50+23.60/3 =70.5/3=23.50cm3
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