Notifications
×
Subscribe
Unsubscribe
Facebook twitter instagram
JAMB WAEC NECO NABTEB
LOADEDKING LINKS®

WAEC 2022 CHEMISTRY ESSAY AND OBJ ANSWERS FOR JUNE 8TH
By on June 8th, 2022. WAEC
0

Wednesday, 8th June, 2022
Chemistry 2 (Essay)
2:00pm – 4:00pm

Chemistry 1 (Objective)
4:00pm – 5:00pm

°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°
Always Visit Loadedking.Com For All Your Exams Answers For Free!
°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°
Chemistry-Obj-Loadedking.com
1-10: ABACCABBCD
11-20: DCDBCCDCDB
21-30: BDCADAABCA
31-40: CBDCCDCBBD
41-50: CACCCDADCA
Completed!
We are LOADED!!
°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°
Chemistry-Essay-Loadedking.com
(2ai)
Ionization energy can be defined as the energy required to remove a loosely bound electron from the outermost shell of a gaseous covalently bonded atom.

(2aii)
This is because B has more shells than Be which makes the valence electrons to be far from the nucleus making it require less energy due to lesser nuclear attraction.

(2b)
I = 0.12A, t = 500seconds
m = 0.015g, F =96500C
M = 48.0, Charge = ?
Using;
m = MIt/CF
C = MIt/mF
C = (48×0.12×500)/(0.015×96500)
C = 2

(2ci)
Al₂O₃

(2cii)
(i) Electricity supply
(ii) Nearness to source of material

(2di)
This can be defined as a property of metal which are weakly attracted to an applied magnetic field

(2dii)
(i) I → ₂₄Cr²⁺ → 2
₂₄Cr⁶⁺ → 0

(ii) ₂₄Cr²⁺

(iii) It has unpaired electrons.
°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°
(5a)
(i) It melts to clear mobile liquid
(ii) A brownish gas is evolved.

(5bi)
(i) Carbon(ii)oxide
(ii) Lead(ii)oxide

(5bii)
Methane(CH₄)

(5biii)
(i) It leads to erosion
(ii) It causes pollution

(5biv)
This is because it has more surface area than it occupies leading to a faster rate of reaction.

(5bv)
Ammoniacal liquor

(5ci)
When water is added to white anhydrous CuSO₄ it turns blue.

(5cii)
(i) It removes the hardness by precipitating the trioxocarbonate(iv)

(ii) It removes the hardness by removing the calcium or magnesium ion and precipitating trioxocarbonate(iv).

(5ciii)
Ca(HCO₃)₂ → CaCO₃ + H₂O + CO₂

°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°
(1ai)
According to Lewis, an acid can be defined as a substance that can accept a pair of non-bonding electrons i.e an electron pair acceptor.

(1aii)
AlCl₃

(1b)
Salting out is a process through which soap is precipitated as solid from the suspension by adding common salt to the suspension. It is a purification process.

(1c)
Reagent – Silver trioxonitrate(v)
Condition – The reaction takes place at high temperatures and pressure.

(1d)
This is the proportion at which isotopes of an element are to each other in its composition.

(1e)
(i) It has a stable configuration
(ii) This is because they have a covalent bond.

(1f)
They can be differentiated using barium chloride. When barium chloride is added to concentrated H₂SO₄ a white precipitate is formed with concentrated HNO₃

(1g)
[TABULATE]

-ELECTROCHEMICAL CELL-
(i) There are two electrolytes
(ii) Salt bridge is present.

-ELECTROLYTIC CELL-
(i) There is only one electrolyte
(ii) There is no salt bridge present.

(1h)
The lower the ionisation energy, the higher the reactivity of metals. Since it decreases down the group, the reactivity increases down the group I.

(1i)
This can be defined as a formula that shows the actual number of atoms in a compound.

(1j)
(i) NH₃
(ii) This is because its interaction is perfectly inelastic.

CHEMISTRY QUESTIONS PAPE
















°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°
°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°
DON’T FORGET TO JOIN OUR TELEGRAM CHANNEL FOR FREE ANSWERS-CLICK HERE TO JOIN NOW!!
°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°

Join Our Telegram Channel

About Author
LoadedKing

Hey there! I’m Olamide The CEO Of Loadedking.Com Am a Webmaster|Programmer|Google Ads manager|SEO Master and Alot More

RECOMMENDED SONGS
No Comments Yet Drop Comment

Leave a Reply

NOTE:- Your comment will appear after it has been approved by an admin.