POST UTME FUTA 2017 Chemistry | Objective

Practice these randomly selected questions to test your readiness.

Question 1
The s\tandard enthalpy of formation of CO2(g) is -393.5 kJ/mol. Calculate the s\tandard enthalpy of formation of CaCO3(s) u\sing the following reaction: CaO(s) + CO2(g) → CaCO3(s).
A. -1206.5 kJ/mol
B. -393.5 kJ/mol
C. 393.5 kJ/mol
D. 1206.5 kJ/mol
Question 2
A 2.5 g sample of a non-metallic oxide, X2O3, is dissolved in 50 mL of 0.1 M HCl. The resulting solution is then titrated with 0.1 M NaOH. If 25 mL of NaOH is required to reach the equivalence point, what is the molar mass of X?
A. 120 g/mol
B. 120 g/mol
C. 120 g/mol
D. 120 g/mol
Question 3
A solution contains 0.1 M NaCl and 0.2 M NaNO3. What is the concentration of Na+ ions in the solution?
A. 0.1 M
B. 0.2 M
C. 0.3 M
D. 0.4 M
Question 4
A sample of CO2 gas is collected over water at a temperature of 25°C and a pressure of 1 atm. Calculate the partial pressure of CO2 in the gas mixture.
A. 0.5 atm
B. 0.75 atm
C. 1 atm
D. 1.25 atm
Question 5
A catalyst is added to a reaction mixture containing 1.0 M H2 and 1.0 M O2. The reaction is allowed to proceed until 50% of the H2 has been consumed. What is the concentration of H2O produced?
A. 0.5 M
B. 1.0 M
C. 1.5 M
D. 2.0 M
Question 6
A 1.00 L sample of a gas at 25°C and 1.00 atm is compressed to 2.00 atm at cons\tant temperature. Calculate the new volume of the gas.
A. 0.500 L
B. 0.750 L
C. 1.00 L
D. 1.25 L
Question 7
A sample of CO2 gas is collected over water at a temperature of 25°C and a pressure of 1 atm. Calculate the volume of the gas at STP.
A. 10 L
B. 20 L
C. 30 L
D. 40 L
Question 8
A sample of CO2 gas is collected over water at a temperature of 25°C and a pressure of 1 atm. Calculate the mole \fraction of CO2 in the gas mixture.
A. 0.5
B. 0.75
C. 1
D. 1.25
Question 9
A 10% solution of NaCl is prepared by dissolving 10 g of NaCl in 90 g of water. What is the molarity of the solution?
A. 0.1 M
B. 0.1 M
C. 0.1 M
D. 0.1 M
Question 10
A solution contains 0.1 M NaCl and 0.2 M NaNO3. What is the concentration of Cl- ions in the solution?
A. 0.1 M
B. 0.2 M
C. 0.3 M
D. 0.4 M
Question 11
A 1.0 M solution of NaOH is titrated with a 1.0 M solution of HCl. What is the pH of the solution after 25 mL of HCl has been added?
A. 1
B. 2
C. 3
D. 4
Question 12
A solution contains 0.1 M NaOH and 0.2 M HCl. What is the pH of the solution?
A. 1
B. 2
C. 3
D. 4
Question 13
A polymer is formed by the condensation reaction between two monomers, A and B. If the molecular weight of the polymer is 2000 g/mol and the molecular weights of the monomers are 150 g/mol and 300 g/mol, respectively, what is the average degree of polymerization?
A. 4
B. 6
C. 8
D. 10
Question 14
A 2 M solution of HCl is titrated with 0.5 M NaOH. Calculate the volume of NaOH required to reach the equivalence point.
A. 40 mL
B. 50 mL
C. 60 mL
D. 70 mL
Question 15
The half-life of a radioactive subs\tance is 5.00 days. If 100.0 g of the subs\tance is present initially, how much will remain after 20.0 days?
A. 25.0 g
B. 50.0 g
C. 75.0 g
D. 100.0 g

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: