Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and... Problem 2RQ: Is the scientific method suitable for solving problems only in the sciences? Explain. Problem 3RQ: Which of the following statements could be tested by quantitative measurement? a. Ty Cobb was a... Problem 4RQ: For each of the following pieces of glassware, provide sample measurement and discuss the number of... Problem 5RQ: A student performed an analysis of a sample for its calcium content and got the following results:... Problem 6RQ: Compare and contrast the multiplication/division significant figure rule to the significant figure... Problem 7RQ: Explain how density can be used as a conversion factor to convert the volume of an object to the... Problem 8RQ: On which temperature scale (F, C. or K) docs 1 degree represent the smallest change in temperature? Problem 9RQ: Distinguish between physical changes and chemical changes. 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Problem 40E: Perform the following mathematical operations, and express each result to the correct number of... Problem 41E: Perform the following mathematical operations, and express the result to the correct number of... Problem 42E: Perform the following mathematical operations, and express the result to the correct number of... Problem 43E: Perform each of the following conversions. a. 8.43 cm to millimeters b. 2.41 102 cm to meters c.... Problem 44E: a. How many kilograms are in 1 teragram? b. How many nanometers are in 6.50 x 102 terameters? c. How... Problem 45E: Perform the following unit conversions. a. Congratulations! You and your spouse are the proud... Problem 46E: Perform the following unit conversions. a. 908 oz to kilograms b. 12.8 L to gallons c. 125 mL to... Problem 47E: Use the following exact conversion factors to perform the stated calculations: 512 yd -= 1 rod 40... 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![**Question:**
Which of the following corresponds to the Ksp expression of PbCl2?
**Options:**
A.
\[ \dfrac{[Pb^{2+}]}{[Pb^{2+}][Cl^-]^2} \]
B.
\[ \dfrac{1}{[Pb^{2+}][Cl^-]^2} \]
C.
\[ \dfrac{[2Pb^{2+}][Cl^-]^2}{[PbCl_2]} \]
D.
\[ \dfrac{[Pb^{2+}][Cl^-]^2}{[PbCl_2]} \]
E.
\[ [Pb^{2+}][Cl^-]^2 \]
**Explanation:**
- These options represent different possible expressions for the solubility product constant (Ksp) of Lead(II) chloride, PbCl2.
- The correct Ksp expression for a sparingly soluble salt like PbCl2, which dissociates in water to form Pb²⁺ and Cl⁻ ions, is given by the multiplication of the product of the molar concentrations of the dissociated ions, each raised to the power of their stoichiometric coefficients in the balanced chemical equation.
The balanced chemical equation for the dissolution of PbCl2 in water is:
\[ PbCl_2 (s) \leftrightharpoons Pb^{2+} (aq) + 2Cl^{-} (aq) \]
Therefore, the expression for the solubility product (Ksp) is:
\[ K_{sp} = [Pb^{2+}][Cl^-]^2 \]
Hence, the correct answer is:
E.
\[ [Pb^{2+}][Cl^-]^2 \]](https://content.bartleby.com/qna-images/question/f65fb7b2-ba85-4e67-8fe1-01f97a564d1e/31a0fe22-4287-4ca2-bd71-19f7d92c2bd4/e683nar_processed.png)
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