2024 NECO CHEMISTRY: 2024 NECO CHEMISTRY PRACTICAL ANSWERS (7398)
2024 NECO CHEMISTRY PRACTICAL ANSWERS Password/Pin/Code is 7398. You can use it to view 2024 Chemistry Answers A day before the exam.
If you're happy about us, start telling people about us to make us grow more.
Enjoy!
We ❤️ "U"
Please ensure that you use your school Average Titration Values in other to get Accurate Solutions with your Lab. Attendant Report.
We have different versions of answers, Both V1 & V2 are 100% accurate. choose either Version 1 or Version 2, this more useful for schools so students won't write one answer verbatim.
CORRECTION
(3dii (V2))
I Hot ----> Yellow
II Cold ----> White
Welcome to official 2024 Chemistry NECO answer page. We provide 2024 Chemistry NECO Questions and Answers on Essay, Theory, OBJ midnight before the exam, this is verified & correct NECO Chems Expo. NECO Chemistry Questions and Answers 2024. NECO Chems Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2024 NECO CHEMISTRY PRACTICAL ANSWERS. 2024 NECO EXAM Chemistry Questions and Answers
Questions Students ask about 2024 NECO CHEMISTRY: 2024 NECO CHEMISTRY PRACTICAL ANSWERS (7398)
- How to get 2024 Chemistry NECO QUESTION AND ANSWERS before the exam? To get 2024 NECO CHEMISTRY PRACTICAL ANSWERS midnight before the exam, all you need to do is to visit expocode.net with the pin sent to you by the admin and login. With the pin, you can have a full access to 2024 NECO CHEMISTRY PRACTICAL ANSWERS
- When do I get Verified 2024 Chemistry NECO QUESTION AND ANSWERS? You will get 2024 NECO CHEMISTRY PRACTICAL ANSWERS a night to the exam because Chemistry is an important subject.
- After using 2024 Chemistry NECO ANSWERS, How many am I assured of in Chemistry? You will score between 7As - 9As in Chemistry if you write verbatim 2024 NECO CHEMISTRY PRACTICAL ANSWERS.
- How verified is your 2024 Chemistry NECO ANSWERS? Our 2024 NECO CHEMISTRY PRACTICAL ANSWERS is 100% verified and legit and it is worthy to be trusted because it from expocode.net which is the most trusted website for exam runs in Nigeria.
- Where do I get 2024 Chemistry NECO QUESTION AND ANSWERS? You can get 2024 NECO CHEMISTRY PRACTICAL ANSWERS only from expocode.net
- Is the answers on this page actually the main 2024 NECO CHEMISTRY PRACTICAL ANSWERS? No, This is 2021 NECO CHEMISTRY PRACTICAL ANSWERS, to get 2024 NECO CHEMISTRY PRACTICAL ANSWERS, you need to subscribe with us by texting or WhatsApping us.
- How do I subscribe for 2024 Chemistry NECO Questions & ANSWERS? To subscribe for 2024 Chemistry NECO Questions & ANSWERS, Message 08069228752 stating that you need 2024 Chemistry NECO Questions & ANSWERS a day to the exam.
- Go to expocode.net official website website for Chemistry subscription: You will need to visit expocode.net official subscription page for NECO Chemistry at https://expocode.net/sub/
- Grab active expocode.net WhatsApp number and chat the admin for Chemistry NECO subscription: expocode.net has two phone numbers for whatsapp, get the active one and chat them on whatsapp for Chemistry subscription
- Drop your subscription details: As you open whatsapp chat with expocode.net drop your MTN recharge card and subject like this; subject: Chemistry, MTN Card: 746473829383738, then wait for them to confirm your payment and send you the Chemistry pin and whatsapp group link.
How to subscribe for 2024 NECO Chemistry (7398) Questions and Answers?
This is how to subscribe for 2024 NECO Chemistry (7398) Questions and Answers expo and get the answers before the exam. If you want to access NECO Chemistry (7398) before the exam, follow this detailed steps
(1a)
Tabulate
Volume of pipette used=25cm3.
Indicator used= Methyl orange
Under Titration, Rough, 1st, 2nd, 3rd,
Final burette reading; |25.00| |23.40| |23.50| 23.60|
Initial burette reading; |0.00| |0.00| |0.00| |0.00|
Volume of A used; |25.00| |23.40| |23.50| |23.60|
(1ai)
Average volume of Acid used=23.40+23.50+23.60/3 =70.5/3=23.50cm3
(1aii)
This is because it is a reaction between a weak acid and strong base
(1aiii)
A funnel should be used while transferring the acid into the burette.
(1bi)
Conc of A in mol|dm³ =?
Conc of A in g|dm³ = 12.75g|dm³
Molar mass of A, NaHSO⁴ = 23+1+32+64
=120g|dm³
From.
Conc(mol/dm³) = conc(g/dm³)/molar mass
Conc =12.75/120
Conc =0.106mol/dm³
(1bii)
Con of B in mol/dm³ =?
Ca =0.106, Cb =? Va =23.50cm³, Vb =25.00cm³
na=1 , nb=1
From; CaVa/CbVb=na/nb
Cb=CaVanb/Vbna
Cb=0.106*23*50*1/25.00*1
Cb=2.5/25
Cb=0.1mol/dm³
(1biii)
Conc of B in g/dm³=?
Molar mass of B , NaOH=23+16+1=40g/mol
From; conc(g/dm³)=conc(mol/dm³)*molar mass
=0.1*40
=4.0g/dm³
(1biv)
Mass of salt formed =?
Recall mole of NaHSO⁴=?
From; mole =con(mol/dm³)*vol(cm³)/1000
Mole=0.106*23.50/1000
Mole=0.0025mol of NaHSO⁴
By proportion 1mol of NaHSO⁴ produce 1mol of 'copied from e x p o c o d e . n e t free' Na²SO⁴ 0.0025mol of NaHSO⁴ will produce X mol of Na²SO⁴ X=0.0025*1=0.0025mol of NaSO⁴
Molar mass of Na²SO⁴=(23*2) + 32 + (16*4)
=46+32+64
=142g/mol
Recall; mole =mole/molar mass
Mass =mole * molar mass
Mass =0.0025*142
Mass =0.36g of Na²SO⁴
This is 2024 NECO CHEMISTRY PRACTICAL ANSWERS No. 1 (V1)
(1)
This is 2024 NECO CHEMISTRY PRACTICAL ANSWERS No. 1 (V2)
(2a)
TEST
C + 5cm³ of distilled water
OBSERVATION
It dissolve completely
INTERFERENCE
C is a soluble salt
(2bi)
TEST
Solution + NaOH + Heat
OBSERVATION
Effervescence occurs in which a colourless gas with pungent smell and turns red litmus paper to blue is given off.
INFERENCES
NH³ gas from NH⁴+ is present
(2bii)
TEST
Stirring rod of HCL + gas given off
OBSERVATION
a gas which gives a pop sound is given off
INFERENCES
H² is present
(2ci)
TEST
Solution C + drops of BaCL²
OBSERVATION
a white precipitate is formed
INFERENCES
CO²^-3, SO²^-4, SO²^-3, May be present.
(2cii)
TEST
Solution in C(i) + dil HCL
OBSERVATION
the white precipitate dissolve is dil HCL and effervescence occurs in which a colourless and odourless gas which turns blue litmus red and lime water milky is given off
INTERFERENCE
CO² gas from CO²^3- confirmed
This is 2024 NECO CHEMISTRY PRACTICAL ANSWERS No. 2 (V1)
(2)
This is 2024 NECO CHEMISTRY PRACTICAL ANSWERS No. 2 (V2)
(3a)
(i)Ca²+
(ii)Pb²+
(3bi)
concentrated acid can be defined as an acid formed when a large quantity of an acid dissolve in a small or little volume of water.
(3bii)
A strong acid is defined as a type of acid that ionize completely in a solution
(3c)
Activated charcoal is used as an adsorbent material
(3d)
(i)Reddish - Brown
(ii) I - red, II - brown.
This is 2024 NECO CHEMISTRY PRACTICAL ANSWERS No. 3 (V1)
(3)
This is 2024 NECO CHEMISTRY PRACTICAL ANSWERS No. 3 (V2)
loading...
Welcome to official 2024 Chemistry NECO answer page. We provide 2024 Chemistry NECO Questions and Answers on Essay, Theory, OBJ midnight before the exam, this is verified & correct NECO Chems Expo
Name: expocode.net
Founded: 2010 (14 years)
Founder: Examcode
Headquarters: Borno, Nigeria
Official Website: https://expocode.net/
Official Contact: +2348069228752
Beware of Scammers.... Please always use 08069228752 for all your transactions to avoid being scammed.
NOTE: Any answer that does not have
badge can be chnaged, removed or updated anytime. The badge means that the
answers have
been verified 100% (if used exactly, you're to get nothing but A1) while without
the
badge means that the answer is still under verification.
If you're not in a hurry, please wait for answer to be verified before you copy.
Click on the drop down links to view answer under them.
Good Luck... Invite family and friends to expocode.net... We are the best and we post, others copy from us.
WAEC GCE 2024. Chemistry 3 answers
2024 waec Gce answers. Chemistry 2 & 1
2024 Neco Gce. Chemistry practical 1
2024 NABTEB GCE. CHEMISTRY ANSWERS.
Chemistry answers. Neco Gce 2024
JAMB Chemistry Answer
2024 WAEC GCE CHEMISTRY PRACTICAL ANSWERS
2024 WAEC CHEMISTRY PRACTICAL ANSWERS
2024 WAEC MAY/JUNE Chemistry Practical Answers