Neco Model Questions Vol1 2019 Chemistry Question 43

Practice objective / multiple choice question 43 from the 2019 Neco Model Questions Vol1 Chemistry examination.

Neco Model Questions Vol1 2019 Chemistry Objective / Multiple Choice Medium Difficulty
Question 43 NECO_MODEL_QUESTIONS_VOL1 • 2019 • CHEMISTRY • objective

A 1.00 L aqueous solution is prepared by adding 0.010 mol of solid BaSO₄ and then 0.20 mol of Na₂SO₄. The solubility product of BaSO₄ at 25°C is \(K_{sp}=1.1\times10^{-10}\). Determine (a) the equilibrium concentration of \(\mathrm{Ba^{2+}}\) ions, and (b) the mass of BaSO₄ that precipitates.

Answer Options

A. [Ba^{2+}] = 1.1×10⁻⁹ M; precipitated mass ≈ 4.66 g
B. [Ba^{2+}] = 2.2×10⁻⁹ M; precipitated mass ≈ 1.17 g
C. [Ba^{2+}] = 5.5×10⁻⁸ M; precipitated mass ≈ 0.23 g
Correct Answer D. [Ba^{2+}] = 5.5×10⁻¹⁰ M; precipitated mass ≈ 2.33 g
Correct Answer
D
Correct Option:
[Ba^{2+}] = 5.5×10⁻¹⁰ M; precipitated mass ≈ 2.33 g

About This Question

This is Neco Model Questions Vol1 2019 Chemistry Question 43. It is one of the objective questions from the 2019 Neco Model Questions Vol1 Chemistry examination.

Difficulty level: Medium .

View More Neco Model Questions Vol1 2019 Chemistry Questions More Neco Model Questions Vol1 Practice Questions Back to Questions

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
Chat with Support