WAEC RUNZ 2023  |  NECO RUNZ 2023  |  NABTEB RUNZ 2023  |  JAMB RUNZ 2023  |  BECE RUNZ 2023  |  IJMB RUNZ 2023  |  JUPEB RUNZ 2023  |  GCE RUNZ 2023  |  WAEC TIMETABLE 2023  |  NECO TIMETABLE 2023  |  NABTEB TIMETABLE 2023  |  BECE TIMETABLE 2023  |  GCE TIMETABLE 2023  |  IJMB TIMETABLE 2023  |  JUPEB TIMETABLE 2023
WELCOME TO EXPOBITE, BEST EXAM HELP PORTAL, THANKS FOR YOUR PATRONAGE!!!
EXPOBITE 2023 EXAM HELP SUBSCRIPTION PRICE LIST


JAMB 2023 SUBSCRIPTION PRICE LIST
(i) ALL SUBJECTS: N50,000
(ii) 4 SUBJECTS: N10,000
(iii) PER SUBJECT: N3,000


WAEC 2023 SUBSCRIPTION PRICE LIST
(i) ALL SUBJECTS: WhatsApp: N15,000 | Pin: N12,500
(ii) 9 SUBJECTS: WhatsApp: N6,000 | Pin: N5,000
(iii) PER SUBJECT: WhatsApp: N800 | Pin: N500


NECO 2023 SUBSCRIPTION PRICE LIST
(i) ALL SUBJECTS: WhatsApp: N15,000 | Pin: N12,500
(ii) 9 SUBJECTS: WhatsApp: N6,000 | Pin: N5,000
(iii) PER SUBJECT: WhatsApp: N800 | Pin: N500

Forward Subject Name, MTN CARD PINS, Phone number to: 07062154881 via TEXT MESSAGE(SMS) ONLY.


(WAEC DAILY/PER SUBJECT SUBSCRIPTION)
KINDLY CLICK HERE FOR THE SUBJECT PRICES

Please Note: Subscribing Through Whatsapp or Facebook is Strictly not Advised (We Reply Text Faster)
•For daily/per subject subscribers, Always subscribe a day or two days b4 each exam!

™EXPOBITE UPDATES™

2021 Neco Chemistry Practical Answers

Neco 2021 Chemistry Practical Questions and Answers, Neco Gce 2021 Chemistry Practical Answers, Neco Chemistry Practical Answers 2021 NECO CHEMISTRY PRACTICAL EXPO IS DONE AND DUSTED FOR MY SUBSCRIBERS ✅✅💯 DM ME NOW IF YOU ARE INTERESTED IN IT I REMAIN THE BEST ✅✅💯 Neco Chemistry Practical Specimen 2021 Neco Chemistry Practical 2022 Neco Chemistry Practical 2021 Date Neco Chemistry Question 2021 Neco Physics Practical 2021 Neco Timetable 2021 Wednesday 14th July 2021 Paper I: Practical – Chemistry 10:00am – 12:00noon ============================ CHEMISTRY PRACTICAL CHEMISTRY-PRACTICAL (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 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 ==================================== (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 ==================================== (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. ==================================== Completed!. Promise Fulfilled.

NECO Chemistry Practical 2021 Questions & Answer

NECO CHEMISTRY PRACTICAL . Link/Password: N400 MTN Card . Whatsapp: N600 MTN Card . Forward your Name, MTN CARD PIN, Subject Name, Phone number to 07062154881 . NOTE: All SMS sent to the above Phone Number are Attendable, Our Phone Number might be diverted to avoid distraction. Always Send us an SMS of your Complain. . ADVICE:-Make Sure you Subscribe if you Don’t Want to be on Hot Seat. . Wishing you the Best of Luck. HOT SEARCHES: neco 2021 chemistry practical questions and answers neco chemistry practical specimen 2021 neco chemistry practical 2021 result neco chemistry practical 2021 answer neco chemistry practical 2022 neco chemistry practical 2021 answers latest news on neco chemistry practical neco chemistry practical 2021 date

Add a Comment

Your email address will not be published. Required fields are marked *

For Any Enquiry, Please Call/WhatsApp US. Whatsapp, Call Or Text Only: 07062154881 (We Reply Text Faster)

JOIN OUR TELEGRAM CHANNEL FOR FREE ANSWERS

X