Wassce 2023 past questions on chemistry paper 2?

I'm sorry, but I cannot provide specific past questions from the WASSCE 2023 Chemistry Paper 2 as they have not been released yet. However, I can provide you with some sample questions from previous years to help you prepare for the exam. Would you like me to do that?

Section A: Multiple Choice (Choose the best answer)

1. Which of the following is the correct order of increasing boiling point of the following compounds?
(a) CH3CH2OH, CH3COOH, CH3CH2CH3
(b) CH3CH2CH3, CH3COOH, CH3CH2OH
(c) CH3COOH, CH3CH2OH, CH3CH2CH3
(d) CH3CH2CH3, CH3CH2OH, CH3COOH

2. The pH of a 0.1 M solution of acetic acid (Ka = 1.8 x 10^-5) is:
(a) 2.0
(b) 4.7
(c) 7.0
(d) 12.0

3. The oxidation state of nitrogen in HNO3 is:
(a) -3
(b) +3
(c) +5
(d) +7

4. Which of the following reactions is an oxidation-reduction reaction?
(a) Zn + HCl → ZnCl2 + H2
(b) NaCl + AgNO3 → NaNO3 + AgCl
(c) NaOH + HCl → NaCl + H2O
(d) NH3 + HCl → NH4Cl

5. The empirical formula of a compound that contains 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen is:
(a) CH2O
(b) C2H4O2
(c) C3H6O3
(d) C4H8O4

Section B: Short Answer

1. Define the following terms:
(a) Mole fraction
(b) pH
(c) Redox reaction

2. Calculate the concentration of hydroxide ions in a 0.01 M solution of sodium hydroxide.

3. Balance the following equation:
Al + HNO3 → Al(NO3)3 + H2

4. Write the balanced chemical equation for the reaction between sodium carbonate and hydrochloric acid.

5. Explain the concept of redox potential and its significance in redox reactions.

Yes