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1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

18. Aqueous Equilibrium

Solubility Product Constant: Ksp

General Chemistry

18. Aqueous Equilibrium

Solubility Product Constant: Ksp

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Multiple Choice

Calculate the molar solubility of CuX in a 0.18 M Na2X solution, given that the solubility product constant (Ksp) for CuX is 1.27×10^-36.

2.54×10^-18 M

1.27×10^-36 M

3.56×10^-19 M

7.06×10^-36 M

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Verified step by step guidance

Identify the chemical equilibrium involved: CuX(s) ⇌ Cu⁺(aq) + X⁻(aq). The solubility product constant (Ksp) expression for this equilibrium is Ksp = [Cu⁺][X⁻].

Recognize that the presence of Na2X in the solution provides a common ion, X⁻, which affects the solubility of CuX. The concentration of X⁻ from Na2X is 0.18 M.

Let the molar solubility of CuX be 's'. At equilibrium, the concentration of Cu⁺ will be 's' and the concentration of X⁻ will be '0.18 + s'.

Substitute these concentrations into the Ksp expression: Ksp = [Cu⁺][X⁻] = s(0.18 + s). Given that Ksp = 1.27×10^-36, set up the equation: 1.27×10^-36 = s(0.18 + s).

Assume that 's' is much smaller than 0.18 M, allowing the simplification 0.18 + s ≈ 0.18. Solve the equation 1.27×10^-36 = s(0.18) for 's' to find the molar solubility of CuX.