POST UTME NOUN 2024 Chemistry | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A diagram showing the titration of a weak acid with a strong base is provided. What is the pH of the resulting solution after the addition of 25.0 mL of 0.100 M HCl to 25.0 mL of 0.100 M NaOH?
A. 7.00
B. 7.50
C. 8.00
D. 9.00
Question 2
A 50.0 mL sample of a solution containing 0.0500 M FeCl3 is mixed with 50.0 mL of a solution containing 0.100 M NaOH. What is the concentration of the resulting solution?
A. 0.0500 M
B. 0.0625 M
C. 0.100 M
D. 0.125 M
Question 3
A diagram showing the titration of a strong acid with a strong base is provided. What is the pH of the resulting solution after the addition of 25.0 mL of 0.100 M HCl to 25.0 mL of 0.100 M NaOH?
A. 7.00
B. 7.50
C. 8.00
D. 9.00
Question 4
A 25.0 mL sample of a solution containing 0.100 M CuSO4 is mixed with 25.0 mL of a solution containing 0.0500 M Na2S. What is the concentration of the resulting solution?
A. 0.0500 M
B. 0.0625 M
C. 0.100 M
D. 0.125 M
Question 5
Determine the number of moles of oxygen gas (O2) produced at s\tandard temperature and pressure (STP) from the complete combustion of 2.50 g of propane (C3H8).
A. 0.0250 mol
B. 0.0500 mol
C. 0.100 mol
D. 0.200 mol

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