NECO GCE Chemistry Practical Questions 2020: Chemistry Practical NECO GCE Expo Questions is out now on our website. In this article, I will be showing you past NECO GCE Chemistry Practical random repeated questions for free. You will also understand how these exams are set and many more examination details. All you need to do is to stay focus and follow this guide.
The National Examinations Council (also known as NECO) is an examination body in Nigeria that conducts the Senior Secondary Certificate Examination and the General Certificate in Education. NECO was created by former Head of State Abdulsalami Abubakar in April 1999. It was the first Federal organization to offer subsidized registration to academic candidates in Nigeria.
NECO GCE Chemistry Practical Questions.
Reason:- Titration of strong acid against base
1aiv)2HCL(aq)+ x2Co3 -> 2 x CLaq + H20(aq) + CO2(g)
Molar mass of HcL = 1+35.5
Con of A is moldm^-3 =
Con of A of gdm^3/molar mass in gdm^3
using CAVA/CBVB = a/b
CA = 0.200mol/dm^3
VA = 26.20cm^3
Cb = ?
VB = 25.0cm^3
a = 2mols
b = 1mol
0.200mol/dm^3 x 26.2cm^3/Cb x 25.0cm^3
Cb = 0.200×26.20×1/25.0×1
Cb = 5.24/25.0mol/dm^3
Cb = 0.2096mol/dm^3
Conc. of B in gdm-3/Conc. of B in mol/dm-3
Sample X is a soluble salt
A gas is evolved. The gas turns red moist litmus blue.
It forms white fumed when NaOH solution was added was added
CO3 gas is CO3^2-
The solution is alkaline
i)NH4CL and AgNo3
– Reshort Hand
– Conical Flask
– white tile
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