Neco 2018 Chemistry Question 24

Practice objective / multiple choice question 24 from the 2018 Neco Chemistry examination.

Neco 2018 Chemistry Objective / Multiple Choice Medium Difficulty

Question 24 NECO • 2018 • CHEMISTRY • objective

A solution is prepared by dissolving \(0.20\) mol of acetic acid (\(K_a = 1.8 \times 10^{-5}\)) and \(0.10\) mol of sodium acetate in \(1.0\) L of water. (a) Calculate the pH of the solution. (b) If \(0.05\) mol of \(\mathrm{HCl}\) is added to the solution, what is the new pH? Give both pH values to two decimal places.

Correct Answer A. pH₁ = 4.44; pH₂ = 4.04

B. pH₁ = 4.50; pH₂ = 4.00

C. pH₁ = 4.30; pH₂ = 3.90

D. pH₁ = 4.60; pH₂ = 4.20

Correct Answer

Correct Option:

pH₁ = 4.44; pH₂ = 4.04

This is Neco 2018 Chemistry Question 24. It is one of the objective questions from the 2018 Neco Chemistry examination.

Difficulty level: Medium .

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