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2024 WAEC Chemistry (Essay & OBJ) Answers [22nd May]
Get Free Live 2024 WAEC May/June Chemistry  (CHEM) Questions and Answers for School Candidates Free of Charge | WAEC May/June Free Chemistry Questions and Answers EXPO Room (22nd May, 2024).
WAEC May/June 2024 FREE CHEMISTRY QUESTION AND ANSWER ROOM [School Candidates]

Wednesday, 22nd May, 2024
Chemistry 2 (Essay) – 9:30am – 11:30am
Chemistry 1 (Objective) – 11:30am – 12:30pm

2024 WAEC CHEMISTRY (CHEM) OBJECTIVES (OBJ) ANSWERS:

1-10: BCBDBACCCB
11-20: CACCDCBCAB
21-30: BBCCBDDDCD
31-40: BCADDAACAC
41-50: BCBCDBCADA

2024 WAEC CHEMISTRY (CHEM) THEORY (ESSAY) ANSWERS:



(2a)
(I)Deliquescence is the process by which a substance absorbs moisture from the atmosphere until it dissolves in the absorbed water and forms a solution. This typically occurs with hygroscopic substances that have a high affinity for water.

(II)Efflorescence is the process by which a substance loses water to the atmosphere, resulting in the formation of a powdery surface deposit. This occurs when the vapor pressure of the water in the hydrated salt is greater than the partial pressure of water vapor in the air.

(2aii)
(I)Deliquescence: Calcium chloride (CaCl₂)
(II)Efflorescence: Sodium carbonate decahydrate (Na₂CO₃·10H₂O)

(2bi)
Ionization energy is the amount of energy required to remove an electron from an isolated gaseous atom or ion in its ground state. The first ionization energy refers to the energy needed to remove the first electron, while subsequent ionization energies refer to the removal of additional electrons.


(2bii)
The second ionization energy of sodium is greater than the first because, after the first electron is removed, the remaining electrons are closer to the nucleus and experience a stronger attractive force. Removing a second electron requires more energy as it disrupts the stable, noble gas configuration left behind.


(2ci)
Charles' Law states that the volume of a given mass of gas is directly proportional to its absolute temperature, provided the pressure remains constant. Mathematically, it is expressed as:
V/T = k


(2cii)
 

 

 

 


 

 

 

 
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TO SUBSCRIBE FOR 2024 WAEC CHEMISTRY ESSAY & OBJ ANSWERS VIA LINK
  1. JUST GO OUT AND BUY MTN CARDS OF N600 (400 + 400 = 800)
  2. GO TO YOUR MESSAGE, TYPE THE CARD PINS CORRECTLY AND SEND TO 08107431933.
  3. DON'T CALL, JUST TEXT, IF THE CARDS PINS ARE VALID, A REPLY WILL BE SENT TO YOU CONFIRMING THAT YOU HAVE BEEN SUBSCRIBED.
  4. RELAX AND WAIT FOR YOUR ANSWERS 30MINUTES BEFORE EXAM STARTS OR AFTER EXAM STARTS.
  5. NB: DO NOT SEND USED CARD PINS OR YOUR NUMBER WILL BE BLACKLISTED.