WAEC Chemistry Practical Answers to Questions 2020/2021 Objectives and Theory. Welcome, Many candidates who registered for the Ongoing 2020 West African Senior Secondary School Certificate Examination are currently online in search of the right answers to the questions and specifically to Chemistry Practical as the case may be. Here we are going to guide you on how to provide the right answers to WAEC 2020 Chemistry Practical questions.
WAEC Chemistry Practical Specimens Answers 2020
The following are what people search for in Chemistry Practical Examination
WAEC 2020 Chemistry Practical answers to questions
The Objectives part of the Examination is provided for students to make the right option. On that note, students are advised to always read the Questions Carefully before attempting to provide answers. Do not presume you saw the questions somewhere, there might be changes, read it at least three times before making your choice.
WAEC Chemistry Practical Answers 2020
WAEC Chemistry Practical Apparatus
1) In addition to the fittings and reagents normally contained in a chemistry laboratory, the following apparatus and materials will be required by each candidate
(a) one burette of 50cm3 capacity
(b) one pipette, either 20cm3 or 25cm3.
All candidates at one centre must use pipettes of the same volume. These should be clean and free from grease
(c) The usual apparatus for titration
(d) the usual apparatus and reagents for qualitative work including the following with all reagents appropriately labelled.
(i) glass rod
(ii) aqueous ammonia
(iii) dilute hydrochloric acid
(iv) dilute sodium hydroxide solution
(v) barium chloride solution
(vi) dilute trioxonitrate (V) acid
(vii) silver trioxonitrate (V) solution
(viii) dilute tetraoxosulphate (VI) acid
(e) glass rod
(f) filtration apparatus
(h) two boiling tubes
(f) four test tubes
(g) wash bottle containing distilled/deionized water
(h) mathematical table/calculator.
WAEC Chemistry Practical Questions and Answers
1. A is 0.100 mol dm-3 solution of an acid. B is a solution KOH containing 2.8 g per 500 cm3.
(a) Put A into the burette and titrate it against 25.0 cm3 portions B using methyl orange as indicator. Repeat the titration to obtain consistent titres. Tabulate your readings and calculate the average volume of A used.
(b) From your results and the information provided above, calculate the:
(i) number of moles of acid in the average titre;
(ii) number of moles of KOH in the volume of B pipetted;
(iii) mole ratio of acid to base in the reaction
[H = 1.00, O = 16.0, K = 39.0]
How to Answer WAEC Chemistry Practical Questions
- Adhere to the Examinations instructions
- Make sure you fill and write your details where required
- Read questions carefully before providing answers
- Do not waste too much time on one question
- Start with the question you know best.
WAEC is one of the Senior Secondary Certificate Examinations that guarantees a Secondary School graduate the chance to progress to the next academic level (Tertiary institution).
The West African Examination Council (WAEC), and The National Business And Technical Examinations Board (NABTEB) are the other SSCE examinations that provides you with an easy passage to any university of your choice as far as you pass them and you pass your UTME examination (JAMB).
Most people often wait till they get to SS3 before sitting for WAEC Examination because they are ignorant of the fact that all students ranging from SS2 are qualified to register and partake in the examination.
I hope the steps about the WAEC Chemistry Practical Specimens above is very helpful to you, kindly use the comment box for any questions.