Neco Chemistry Practical 2022 Answers for 20th July 2022

Neco Questions and Answers 2022
Neco Questions and Answers 2022

Neco Chemistry Practical Answers 2022 for 20th July 2022 with questions 100% verified official questions and answers for senior secondary schools.

NECO CHEMISTRY PRACTICAL ANSWERS 2022

(1)
Tabulate
Titration; | rough | 1 | 2 | 3 |

Final; | 20.50 | 14.00 |14.00 | 14.00 |

Initial; | 0.00 | 0.00 | 0.00 | 0.00 |

Volume of A used; | 20.50 | 14.00 |14.00 | 14.00 |

Volume of pipette used
=25.00cm³

(1a)
Average volume of A used = 14.00+14.00+14.00/3
=14.00cm³ (Va)

2HNO³ + X²CO³ —> 2XNO³ + H²O + CO²

(1bi)
Conc – of B in molldm³ = ?
Given;
Ca= 0.15molldm³
Vb= 25.00cm³
Va= 14.00cm³
Cb= ??
Na= 2
Nb= 1

Using;
CaVa/CbVb=Na/Nb
Cb= CaVaNb/VbNa
Cb= 0.15*14.00*1/25.00*2
Cb= 2.1/50
Cb= 0.042molldm³.

(1bii)
Molar mass of B =?
Using;
Conc(molldm³)= Conc(gldm³)/molar mass
0.042/1 * 4.20/m.m
m.m=4.20/0.042
m.m=100glmol

(1biii)
Value of x in x²(i)³=?
(2x)+12 + (16*3)= 100
2x+12+48=100
2x+60=100
2x=100-60=40
2x/2=40/2
x=20g/mol

(1ci)
(i)I ensure that the readings are taken at the lower meniscus
(ii)I ensure that my saliva did not enter the pipette while taking the base

(1cii)
Pink
==============================

(2)
Tabulate

(2ai)
Under Observation;
An effervescence occurs in which a colorless and odourless gas which burns blue litmus red is evolved.

Under Inference;
CO² gas from CO3^²is suspected

(2aii)
Under Observation;
The gas turns lime water milky.

Under Inference;
CO² gas is confirmed.

(2b)
Under Observation;
Y dissolves completely in water

Under Inference;
Soluble salt

(2bi)
Under Observation;
White gelatinous PPT is formed.

Under Inference;
Al³+, Zn²+, Pb²+, present

(2bii)
Under Observation;
The white gelatinous PPT dissolve in excess NaOH

Under Inference;
Al³+, Zn²+, Pb²+, present

(2biii)
Under Observation;
White gelatinous PPT formed.

Under Inference;
Al³+, Zn²+, Pb²+, present

(2biv)
Under Observation;
The white gelatinous PPT remain insoluble in excess NH³

Under Inference;
Al³+, Pb²+, present.
==============================

(3ai)
It increases the boiling point of water

(3aii)
It requires heat to occur.

(3bi)
This is because it is deliquescent.

(3bii)
I. Calcium oxide
II. Anhydrous copper(ii) tetraoxosulphate(vi)

(3ci)
Hydrogen Chloride

(3cii)
I. To separate a mixture of immiscible liquids
II. To collect gases.
==============================
+++++++++++++++++++++++++++++++++
Teacher’s Report filling
1: A=0.15, B= 4.20
2 (i=14.00, ii=14.00, iii=14.00)

+++++++++++++++++++++++++++++++++
TAKE NOTE

For question 1

Use your school’s endpoint and use it wherever you see our endpoint (13.20cm³) …and calculate with it.

Use the answer you got in 1b(i) to solve in 1b(ii) i.e we got 0.0396 in 1bi after calculating with our average titre (endpoint) value 0.0396, as u can see, we then used the 0.0396 in 1bii which we got from our calculation in 1bi.

NB: If you use our endpoint and your school teacher submits a different one with a wide margin to what u used, you will either fail or lose some mark in this particular question. Your school teacher should have in one way given you the average titre value(endpoint) or you might have gotten it in the lab from your past experiment.

If your school wants to use mine, then the chemistry teacher must submit endpoint similar to ours without much difference…eg 13.10, 13.20, 13.30, etc
=================================
COMPLETED!!!
=================================
=================================



CHEMISTRY PRACTICAL SPECIMENS

INSTRUCTION(S) TO SCHOOL
In addition to the apparatus and reagents to be available in a secondary school chemistry laboratory, each candidate will require the following:

(a) One burette (50cm³)

(b) One pipette (20cm³/25cm³), however all candidates in a center must use pipettes of the same volume.

(c) The usual apparatus and reagents for qualitative work including;
(i) Dilute sodium hydroxide solution
(ii) Dilute ammonia solution
(iii) Dilute hydrochloric acid
(iv) Distilled water
(v) Red and blue litmus paper
(vi) Barium chloride solution
(vii) Phenolphthalein
(viii) Calcium hydroxide solution
(ix) Methyl orange
(x) One boiling tube
(xi) Five test tubes
(xii) Filtration apparatus
(xiii) source of heat

Each candidates should be supplied with the following, labelled An, Bn, Xn and Yn; where ‘n’ is the candidate’s serial number.

* 150cm³ of trioxonitrate(v) acid solution in a bottle labelled “An”. The acid solution which should be the same for all candidates will contain 9.50cm³ of concentrated trioxonitrate(v) acid per dm³ of solution.
=================================
=================================
Answers loading…
We are Expobite!
Tell your friends about this website.
Thank you for choosing Expobite!!!

Neco Chemistry Practical Answers 2022: here are the verified Neco 2022 Chemistry Practical questions and answers for SS3 students for Wednesday 20th July 2022. Neco 2022 Chemistry Practical Questions and Answers.

Neco Chemistry Answers 2022: EXPO: Neco Chemistry Practical Questions and Answers 2022/2023, 2022/2023 Neco EXPO ON Chemistry Practical QUESTIONS, 2022 Chemistry Practical Questions & Answers is Out.

Neco Chemistry Practical Answers 2022

Wednesday 20th July 2022

  • Paper I: Practical – Chemistry – 10:00am – 12:00pm

Neco 2022 Chemistry Practical Questions and Answers

Neco Chemistry Practical Answers 2022: Welcome to the Expobite answer page where you will get verified and 100% authentic and correct Neco Chemistry Practical Answers 2022 for Wednesday 20th July 2022.

Examkey.net Chemistry Practical pin questions and answers for today, examkey, joberplanet, lasu-info, ceebook, noniwap, noniexpo, examspot, unn-edu, nairaland, utmeofficial, bestexamportal

Neco 2022 Chemistry Practical Questions & Answers

I know you really want to pass and get an A in your Neco 2022 Chemistry Practical examination? then follow the below to subscribe to our Neco Chemistry Practical exam runz/expo, we promise to send you both questions and answers at least 2 hours before the Neco Chemistry Practical 2022 examination.

Neco 2022 Chemistry Practical Questions and Answers Subscription Price List:

  • To receive the Neco 2022 Chemistry Practical questions and answers through WhatsApp, the subscription price is ₦600 MTN airtime/recharge card.
  • To have access to our Expobite Answer Page at https://expobite.net/answer-page/ where the Neco Chemistry Practical answer 2022 will be posted also using the 4 digits PIN/PASSWORD/KEY we will give you once you subscribe, the subscription price is ₦500 MTN airtime/recharge card.
  • To receive the Neco Chemistry Practical 2022 questions and answers via text message/SMS, the subscription price is ₦1,000 MTN airtime/recharge card.

How to Subscribe

Kindly follow the below simple steps to subscribe to our 2022 Neco Chemistry Practical Questions and answers expo/runz for both Obj and Essay:

Choose your desired way of receiving answers

As I wrote above, we have 3 ways of sending questions and answers to our candidates, kindly choose between the 3 answer delivery methods available on our platform, ie, choose WhatsApp, PIN, or Text Message.

Transfer/Send Airtime to us.

You can either buy an MTN recharge card worth the subscription price to us or transfer it to our MTN line from your bank account through USSD or your Banking app.
Follow the below steps to successfully subscribe through the MTN recharge card:
– Buy a recharge card worth the amount of the subscription, open your WhatsApp and send the recharge card pins to us on 07062154881.
Follow the below steps to successfully subscribe through Bank airtime transfer (VTU):
– Open your bank app or USSD or go to POS and recharge our MTN line 07062154881.

We will confirm your subscription and get back to you immediately.

Neco Chemistry 2022 Answers & Questions for Practical, Neco Chemistry Practical Practical Questions and Answers 2022, 2022/2023 Neco EXPO ON Chemistry Practical QUESTIONS, Neco Chemistry Practical Questions and Answers for 2022/2023, Neco Chemistry Practical questions and answers, Neco Chemistry Practical Questions and Answers 2022/2023 Expo/Runs

I Will Send you the Correct 2022 Neco Chemistry (Practical) Questions and Answers, Neco 2022 Chemistry (Practical) Runs, Neco 2022 Chemistry (Practical) Expo, Neco 2022 Chemistry (Practical) Answers with Objective and Essay/Theory Exactly 5 hours Before the Exam. Neco 2022 Chemistry (Practical) Obj and Essay Questions & Answers

Neco 2022 Chemistry (Practical) Questions and Answers

We are pleased to inform all Neco students sitting for the 2022 Neco Chemistry (Practical) Exam that we have the complete Neco 2022 Chemistry (Practical) Expo with Questions Paper for May/June Neco Examination.

Did you know a good Neco result is your one ticket to admission to any University or Polytechnic of your choice? If you’re directed to this website pls subscribe now and smile while you write your exam.

How to Subscribe for Neco 2022 Chemistry (Practical) Answers.

Choose from the below subscription price list that best suits you, then send the exact amount as Mtn Recharge Card to us on 07062154881

TEXT MESSAGE: N1,000

WHATSAPP GROUP: N600

PASSWORD LINK: N500

See How to Make Payment For Neco 2022 Chemistry (Practical) Expo.

Send the following details:

  • Your Mtn Card
  • Your Subject Name
  • Your Phone Number to 07062154881

Example:

8393994848484/Commerce/08123456789

Immediately we have confirmed your details, the complete 2022 Neco Chemistry (Practical) runs will be sent to you.

WHAT YOU MUST KNOW

  1. If you supply Neco to your students or schools and you will need Neco Chemistry (Practical) questions paper and answers contact us.
  2. No website would post free 2022 Neco Chemistry (Practical) answers online if they got the real questions paper direct from Neco officials like us. Beware of fake websites!!
  3. Most of the websites posting free Neco Chemistry (Practical) expo online are posting fake answers or copied ones with little to no knowledge of how it came about.

I HOPE THE DESCRIPTION PROVIDED ABOVE IS ENOUGH TO CONVINCE YOU WE ARE 100% REAL AND LEGIT.

Neco Chemistry (Practical) Answer 2022, Neco Chemistry (Practical) 2022, Neco Timetable 2022, Neco 2022 Syllabus, Neco Time Table Download, Neco May June exam Start When, Neco May/June 2022 Registration, Is Neco Registration Still on, Neco Chemistry (Practical) Nov Dec 2022, Neco Chemistry (Practical) Answer 2022, Neco Chemistry (Practical) 2022, Neco 2022 Chemistry (Practical) Comprehension/Written Expression, Alternative to Chemistry (Practical) Past Questions Pdf, 2022 Neco Chemistry (Practical) Questions and Answers Pdf, 2022 Neco Chemistry (Practical) Questions and Answers Pdf Download, 2022 Neco Chemistry (Practical) Questions and Answers

Be the first to comment

Leave a Reply

Your email address will not be published.


*