NECO GCE Chemistry Practical Solution Questions and Answer – NOV/DEC 2017 Expo Runz.
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
Relative atomic mass of X
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
(NH4)2CO3(aq)+2NaOH(aq) >> Na2CO3(aq)+2NH3+2H2O(g)
REAGENTS: Adition of KSCN Solution
(Fe3+) Blood red colouration
REAGENT: Addition of NaOH solution in drop till excess
(Fe2+): Dirty green gelatineous precipitaye which is insolube in excess NaOH.
(Fe3+): Reddish brown gelatineous precipitate which is insolube in excess NaOH.
REAGENT: Addition of K2Fe(CN) solution
(Fe2+): It forms a dark blue precipitate
(Fe3+): A deep red colouration
i)NH4CL and AgNo3
– Reshort Hand
– Conical Flask
– white tile
042tvseries.Com send all exam expo answer earlier than others
NECO GCE ssce 2017 Chemistry practical expo answers, Ssce 2017 Chemistry practical objective and essay Expo answers now available, nov/dec Chemistry practical theory Answers for 2017, Chemistry practical obj and theory Questions NECO GCE Ssce Expo Answers Here, Free wassce Chemistry practical objective, essay & theory correct Expo 2017 answers Runz NECO GCE Chemistry practical, NECO GCE Ssce 2017 Free Chemistry practical essay, obj and theory Questions and Answers Expo for NECO GCE Chemistry practical, Wassce 2017 Free Chemistry practical Paper 1 and Paper 2 objective and essay Questions and Answers Expo Now Posted, Free Chemistry practical objective ans for internal ssce, see NECO GCE ssce expo Chemistry practical obj and theory, essay questions for free, loadedexpo correct wassce Chemistry practical ans, sure NECO GCE ssce Chemistry practical objective answers runz runs expo free real and correct NECO GCE ssce 2017 nov/dec Chemistry practical free expo runz runs ans answers online for free see free answers online, 2017 Verified NECO GCE Free Ssce Chemistry practical Obj and theory Answers have been posted REAL NECO GCE SSCE Chemistry practical QUESTIONS & ANSWERS Direct To Phone Number AS Text message, RE: 2017 WASSCE Chemistry practical (Expo) NECO GCE 2017 certified runs Chemistry practical questions and answers NECO GCE SSCE November/December 2017 Chemistry practical THEORY / ESSAY / OBJ QUESTION AND EXPO I need NECO GCE ssce free expo site, how can I get NECO GCE Chemistry practical answer for free, NECO GCE 2017 Chemistry practical essay, Objective And Theory Question and Answer Now Posted, Real 2017/2018 nov/dec wassce NECO GCE Chemistry practical objective, essay and theory 100% correct expo questions and answers runz chokes runs, verified 2017 NECO GCE Chemistry practical theory, essay and obj NECO GCE Chemistry practical expo website, NECO GCE ssce Chemistry practical live cheats, sure November/December NECO GCE SSCE 2017 Chemistry practical original objective, theory and essay questions and answer now available here, 100% NECO GCE ssce Chemistry practical expo, 2017 wassce Chemistry practical obj, essay and theory runz now posted, correct NECO GCE ssce Chemistry practical objective, essay (theory) answer now ready, free 2017 wassce Chemistry practical obj, theory and essay best expo site NECO GCE ssce Chemistry practical questions and answers, password for certified NECO GCE ssce Chemistry practical essay theory obj expo, how to get/ where to get wassce Chemistry practical theory, essay and objective expo answer direct to my phone as text message, trusted NECO GCE ssce Chemistry practical questions and answer, i need NECO GCE Ssce nov/dec Chemistry practical essay theory objective obj Expo 2017 answers on whatsapp, gidifans Chemistry practical answer, solutionclass Chemistry practical answer, 042tvseries Chemistry practical answer, codedexam NECO GCE Chemistry practical answer, wapbaze Chemistry practical answer, wapextra Chemistry practical expo, Martinlibrary Chemistry practical expo, examgists NECO GCE Chemistry practical expo, NECO GCE Chemistry practical objectives answer, naija NECO GCE Chemistry practical expo free answer