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

question 114

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. Using the K^sp values listed below, decide which aqueous reagent, if any, will definitely precipitate X⁺ before precipitating Y⁺ from solution. Given Ksp values:
XCl₂, 1 × 10^-5 YCl₂, 1 × 10^-10 X(OH) ₂, 1 × 10^-10 Y(OH) ₂, 1 × 10^-5

• A) 1 M NH₃
• B) 1 M HCl
• C) 1 M HNO₃
• D) 1 M NaCl
• E) None of these choices are correct.

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Definitions:

Personality

The amalgamation of traits or attributes that create a person's unique character and ways of behaving.

Free Association

A psychoanalytic technique in which a patient says whatever comes to mind without censorship as a way to uncover unconscious thoughts and feelings.

Reality

The state of things as they actually exist, outside of individual perceptions or interpretations.

Ego

The largely conscious, “executive” part of personality that, according to Freud, mediates among the demands of the id, the superego, and reality. The ego operates on the reality principle, satisfying the id’s desires in ways that will realistically bring pleasure rather than pain.