POST UTME FUTA 2020 Chemistry | Objective

Practice these randomly selected questions to test your readiness.

Question 1
A solution contains 0.1 M NaCl. If 10 mL of the solution is titrated with 0.1 M AgNO3, what is the concentration of the chloride ion after the titration?
A. 0.01 M
B. 0.02 M
C. 0.03 M
D. 0.04 M
Question 2
A 2.0 L flask contains 2.0 mol of an ideal gas at 300 K. If the gas is heated to 400 K at cons\tant volume, what is the new pressure?
A. 4.0 atm
B. 6.0 atm
C. 8.0 atm
D. 10.0 atm
Question 3
A 2.0 L flask contains 1.0 mol of an ideal gas at 300 K. If the gas is compressed to 1.0 L at cons\tant temperature, what is the new pressure?
A. 2.0 atm
B. 4.0 atm
C. 6.0 atm
D. 8.0 atm
Question 4
A solution of 0.2 M HCl is titrated with 0.2 M NaOH. If 30 mL of the base is required to reach the equivalence point, calculate the volume of the acid required to reach the equivalence point.
A. 30 mL
B. 40 mL
C. 50 mL
D. 60 mL
Question 5
A solution of 0.1 M NaOH is titrated with 0.1 M HCl. If 20 mL of the acid is required to reach the equivalence point, calculate the volume of the base required to reach the equivalence point.
A. 20 mL
B. 40 mL
C. 60 mL
D. 80 mL
Question 6
A solution of 0.100 M HCl is titrated with a 0.100 M solution of NaOH. If 50.0 mL of NaOH is required to reach the equivalence point, calculate the pH of the solution at the equivalence point.
A. 7.00
B. 8.00
C. 9.00
D. 10.0
Question 7
The rate cons\tant of a first-order reaction is 0.05 min^-1. If the initial concentration of the reac\tant is 0.1 M, what is the concentration after 10 minutes?
A. 0.01 M
B. 0.02 M
C. 0.03 M
D. 0.04 M
Question 8
The polymerization of styrene \( C6H5CH=CH2 \) produces a polymer with the following structure: [-C6H4CH=CH-]n. If the polymer has a molecular weight of 100,000 g/mol, calculate the degree of polymerization.
A. 500
B. 1000
C. 2000
D. 5000
Question 9
A 0.500 M solution of NaOH is titrated with a 0.250 M solution of HCl. If 25.0 mL of HCl is required to reach the equivalence point, calculate the number of moles of HCl present in 50.0 mL of the solution.
A. 0.0100 mol
B. 0.0150 mol
C. 0.0200 mol
D. 0.0250 mol
Question 10
Determine the number of moles of oxygen gas (O2) produced at STP when 2.5 moles of hydrogen gas (H2) react with oxygen gas according to the equation: 2H2 + O2 → 2H2O.
A. 1.25 moles
B. 2.5 moles
C. 5 moles
D. 10 moles
Question 11
A 1.0 M solution of NaOH is prepared by dissolving 40.0 g of NaOH in 1.0 L of water. What is the concentration of the solution in terms of molarity?
A. 0.1 M
B. 0.5 M
C. 1.0 M
D. 2.0 M
Question 12
A solution contains 0.1 M HCl. If 10 mL of the solution is titrated with 0.1 M NaOH, what is the concentration of the hydroxide ion after the titration?
A. 0.01 M
B. 0.02 M
C. 0.03 M
D. 0.04 M
Question 13
The reaction of cyclohexane with bromine in the presence of light produces a mixture of 1,2-dibromocyclohexane and 1,4-dibromocyclohexane. If 2.50 g of cyclohexane reacts with 2.00 g of bromine, and the reaction yields 1.50 g of 1,2-dibromocyclohexane, calculate the percentage yield of 1,2-dibromocyclohexane.
A. 70%
B. 80%
C. 90%
D. 95%
Question 14
A 2.5 L flask contains 0.5 mol of an ideal gas at 300 K. If the gas is heated to 400 K at cons\tant volume, what is the new pressure?
A. 1.5 atm
B. 2.0 atm
C. 2.5 atm
D. 3.0 atm
Question 15
The rate cons\tant of a reaction is given by the equation: k = Ae^\( -Ea/RT \). If the rate cons\tant at 25°C is 0.05 s^\( -1 \) and at 50°C is 0.2 s^\( -1 \), calculate the activation energy (Ea) of the reaction in kJ/mol.
A. 50 kJ/mol
B. 75 kJ/mol
C. 100 kJ/mol
D. 125 kJ/mol

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub: