Neco Gce 2017 Chemistry Practical Question And Answers

 

1ai) Methyl Orange
Reason:- Titration of strong acid against base

1aii) Yellow

1aiii)Hydrochloricacid
1aiv)2HCL(aq)+ x2Co3 -> 2 x CLaq + H20(aq) + CO2(g)

1b) Molar mass of HcL = 1+35.5
=36.5gmol^-1
Con of A is moldm^-3 =
Con of A of gdm^3/molar mass in gdm^3
=7.30gdm^-3/36.5gmol^-1
=0.200moldm^-3

(3a)-NH4Cl and AgNo3-ZnCo3-FeS-AgNO3-NH4Cl

(3b)-Burrette
-Retort stand
-Solution/Acid
-Conical flask

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