Neco 2024 Chemistry Question 7

Practice objective / multiple choice question 7 from the 2024 Neco Chemistry examination.

Neco 2024 Chemistry Objective / Multiple Choice Medium Difficulty

Question 7 NECO • 2024 • CHEMISTRY • objective

Equal volumes (0.500 L each) of a 0.010 M BaCl2 solution and a 0.020 M Na2SO4 solution are mixed at 25 °C. BaSO4 precipitates and solid remains in equilibrium with the solution. Given \(K_{sp}(\mathrm{BaSO_4}) = 1.1\times10^{-10}\), determine (a) the mass of BaSO4 that precipitates, and (b) the equilibrium concentration of Ba^{2+} ions in the final solution. Express the mass in grams to three significant figures and the concentration in mol L^{-1} in scientific notation.

A. 1.05 g; 2.2×10⁻⁸ M

B. 1.17 g; 1.1×10⁻⁸ M

C. 1.23 g; 2.2×10⁻⁸ M

Correct Answer D. 1.17 g; 2.2×10⁻⁸ M

Correct Answer

Correct Option:

1.17 g; 2.2×10⁻⁸ M

This is Neco 2024 Chemistry Question 7. It is one of the objective questions from the 2024 Neco Chemistry examination.

Difficulty level: Medium .

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