# WAEC 2018 Chemistry Practical Solution Answer – May/June Expo

## WAEC Chemistry Practical Solution Questions and Answer – MAY/JUNE 2018 Expo Runz.

Please Use Your School End Point.
==================================
1a)
Volume of pepette = 25.00Cm^2
Indicator Used = Methyl Orange
Tabulate
BURETTE READING|ROUGH|1ST|2ND|3RD|
Final reading Cm^3|25.00|34.00|29.20|24.10|
Initial Reading Cm^3|0.00|10.00|5.00|0.00|
Volume Of Acid Used In Cm^3|25.00|24.00|24.20|24.10|
Average Volume of Acid used =(24.00+24.20+24.10/3)cm^3
=24.10cm^3

1bi)
Con in mol/dm3=conc in g/dm^3/molar mass
con of B in g/dm^3 =4.80/0.25 =19.2g/dm^3
molar mass = Fe+2Cl = 56+2(35.5)=127g/mol
conc in mol/dm^3 =19.2/127 =0.15mol/dm^3
1bii)
using CAVA/CBVB = NA/NB
CA*11.80/0.15*20=1/5
CA=0.15*20*1/11.80*5
CA=0.05moldm^-3
1biii)
mole =con(mol/dm^3)x vol (dm^3)
=0.15*20/1000
=0.003moles.
==================================
2a)
-Observation-
part of the C dissolves,colourless filtrate salt
-Inference-
C is a mixture of soluble salt
2bi)
-observation-
white precipitate formed
-Inference-
Cl is present
2bii)
-Observation-
precipitate dissolves
-Inference-
Cl confirmed
2biii)
-Observation-
colourless gas evolved with characteristic choking smell, turns litimus paper blue
-Inference-
Gas is NH3
2c)
-Observation-
Residue dissolves liberating a colourless gas which turns lime water milky
-Inference-
gas is CO2
CO^2-3 present
==============================
3i)
A white precipitate of barium sulphate will be formed by the instant reaction between barium chloride and sulphuric acid.
BaCl2 + H2SO4 = BaSO4 + 2HCl
3b)
Iron sulfide reacts with hydrochloric acid, releasing the malodorous (rotten egg smell) and very toxic gas,hydrogen sulphide. FeS + 2 HCl → FeCl2+ H2S

3c)
The iron dissolves, releasing hydrogen and making an iron chloride solution:
Fe + 2HCl → FeCl₂ + H₂
=========================
042tvseries.Com send all exam expo answer earlier than others
============================
WAEC ssce 2018 Chemistry Practical expo answers, Ssce 2018 Chemistry Practical objective and essay Expo answers now available, may/june Chemistry Practical theory Answers for 2018, Chemistry Practical obj and theory Questions WAEC Ssce Expo Answers Here, Free wassce Chemistry Practical objective, essay & theory correct Expo 2018 answers Runz WAEC Chemistry Practical, WAEC Ssce 2018 Free Chemistry Practical essay, obj and theory Questions and Answers Expo for WAEC 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 WAEC ssce expo Chemistry Practical obj and theory, essay questions for free, loadedexpo correct wassce Chemistry Practical ans, sure WAEC ssce Chemistry Practical objective answers runz runs expo free real and correct WAEC ssce 2018 may/june Chemistry Practical free expo runz runs ans answers online for free see free answers online, 2018 Verified WAEC Free Ssce Chemistry Practical Obj and theory Answers have been posted REAL WAEC SSCE Chemistry Practical QUESTIONS & ANSWERS Direct To Phone Number AS Text message, RE: 2018 WASSCE Chemistry Practical (Expo) WAEC 2018 certified runs Chemistry Practical questions and answers WAEC SSCE November/December 2018 Chemistry Practical THEORY / ESSAY / OBJ QUESTION AND EXPO I need WAEC ssce free expo site, how can I get WAEC Chemistry Practical answer for free, WAEC 2018 Chemistry Practical essay, Objective And Theory Question and Answer Now Posted, Real 2018/2019 may/june wassce WAEC Chemistry Practical objective, essay and theory 100% correct expo questions and answers runz chokes runs, verified 2018 WAEC Chemistry Practical theory, essay and obj WAEC Chemistry Practical expo website, WAEC ssce Chemistry Practical live cheats, sure November/December WAEC SSCE 2018 Chemistry Practical original objective, theory and essay questions and answer now available here, 100% WAEC ssce Chemistry Practical expo, 2018 wassce Chemistry Practical obj, essay and theory runz now posted, correct WAEC ssce Chemistry Practical objective, essay (theory) answer now ready, free 2018 wassce Chemistry Practical obj, theory and essay best expo site WAEC ssce Chemistry Practical questions and answers, password for certified WAEC 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 WAEC ssce Chemistry Practical questions and answer, i need WAEC Ssce may/june Chemistry Practical essay theory objective obj Expo 2018 answers on whatsapp, gidifans Chemistry Practical answer, solutionclass Chemistry Practical answer, 042tvseries Chemistry Practical answer, codedexam WAEC Chemistry Practical answer, wapbaze Chemistry Practical answer, wapextra Chemistry Practical expo, Martinlibrary Chemistry Practical expo, examgists WAEC Chemistry Practical expo, WAEC Chemistry Practical objectives answer, naija WAEC Chemistry Practical expo free answer
Real and Confirmed WAEC Chemistry Practical Questions and Expo Answer – May/June 2018
Verified WAEC 2018 May/June Chemistry Practical OBJ and Essay Answer and Solution to the questions.
GOODLUCK!!!
See also  How to Accept/Reject Admission on JAMB CAPS Portal