POST UTME SUMMIT UNIVERSITY 2022 Chemistry | Objective

Are you preparing for POST UTME SUMMIT UNIVERSITY exams? Reviewing past questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2022 Chemistry (Objective) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1
Determine the s\tandard enthalpy of formation of CaCO3(s) from the following data: ΔHf(CaO(s)) = -635.09 kJ/mol, ΔHf(CO2(g)) = -393.51 kJ/mol, ΔHf(Ca(s)) = 0 kJ/mol.
Correct A. -1206.60 kJ/mol
B. -1206.60 kJ/mol
C. -1206.60 kJ/mol
D. -1206.60 kJ/mol

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 2
A 2.50 L flask contains 0.150 mol of an ideal gas at 25°C. Calculate the pressure of the gas u\sing the ideal gas law.
Correct A. 1.01 x 10^5 Pa
B. 1.01 x 10^5 Pa
C. 1.01 x 10^5 Pa
D. 1.01 x 10^5 Pa

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 3
A solution contains 0.250 mol of NaCl in 1.00 L of water. Calculate the molarity of the solution.
Correct A. 0.250 M
B. 0.250 M
C. 0.250 M
D. 0.250 M

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 4
A 2.00 L flask contains 0.150 mol of CO2 at 25°C. Calculate the pressure of the gas u\sing the ideal gas law.
Correct A. 1.01 x 10^5 Pa
B. 1.01 x 10^5 Pa
C. 1.01 x 10^5 Pa
D. 1.01 x 10^5 Pa

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 5
A solution contains 0.250 mol of NaCl in 1.00 L of water. Calculate the molarity of the solution.
Correct A. 0.250 M
B. 0.250 M
C. 0.250 M
D. 0.250 M

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 6
A redox reaction involves the oxidation of bromine water to bromine gas and the reduction of silver nitrate solution to silver metal. Write the balanced half-equations for the oxidation and reduction reactions.
A. 2Ag+(aq) + 2e- → 2Ag(s)
B. 2Ag+(aq) + 2e- → 2Ag(s)
C. 2Ag+(aq) + 2e- → 2Ag(s)
Correct D. 2Ag+(aq) + 2e- → 2Ag(s)

Correct Answer: D

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 7
A sample of nitrogen gas is collected over water at a temperature of 298 K and a pressure of 1.00 atm. Calculate the partial pressure of the nitrogen gas.
Correct A. 0.95 atm
B. 0.90 atm
C. 0.85 atm
D. 0.80 atm

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 8
A solution of sodium hydroxide is titrated with a solution of hydrochloric acid. The initial pH of the solution is 12.0. Calculate the pH after the addition of 25.0 mL of 1.00 M hydrochloric acid.
A. 10.5
Correct B. 11.0
C. 11.5
D. 12.0

Correct Answer: B

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 9
A diagram of a titration setup is shown below. Identify the part labeled A.
Correct A. A burette
B. A pipette
C. A flask
D. A beaker

Correct Answer: A

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics
Question 10
A diagram of a titration setup is shown below. Identify the part labeled B.
A. A burette
B. A pipette
Correct C. A flask
D. A beaker

Correct Answer: C

Want to see the full step-by-step solution? Unlock AI Explanation & Analytics

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:
Chat with Support