The Salts X(NO₃)₂ and Y(NO₃)₂ (Where X⁺ and Y⁺ Are

question 94

Multiple Choice

The salts X(NO₃) ₂ and Y(NO₃) ₂ (where X⁺ and Y⁺ are metal ions) are dissolved in water to give a solution which is 0.1 M in each of them. Which of the answers gives the concentration of chloride ions will precipitate the most YCl₂ without precipitating any XCl₂? Given K_sp values: XCl₂, 2 * 10¯⁵; YCl₂, 1 *10¯¹⁰

• A) 1 M Cl¯
• B) 0.1 M Cl¯
• C) 0.01 M Cl¯
• D) 0.001 M Cl¯
• E) 0.0001 M Cl¯

---

Definitions:

Just-World Effect

The cognitive bias to believe that the world is fundamentally fair, leading people to rationalize an undeserved, negative experience by the victim.

Cognitive Dissonance

A psychological state where an individual experiences discomfort due to holding contradictory beliefs or attitudes, leading to an alteration in one of the conflicting elements.

Reproductive Rights

The rights of individuals to decide freely on matters related to reproduction, including access to contraception, fertility treatments, and abortion.

Late-Term Abortions

Abortions performed during the later stages of pregnancy, often defined by specific legal or medical criteria.