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

question 58

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^-

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Definitions:

Top-down Processing

An approach to perception where prior knowledge, expectations, or experience drives the interpretation of sensory information.

Bottom-up Processing

A type of information processing that begins with sensory input and builds up to the formation of perception.

Ambiguous Figure

An image or drawing designed to offer more than one perceptual interpretation, often used in psychological tests to explore perception and cognitive processes.

Geons

Simple geometric figures, such as cubes, cylinders, and pyramids, that can be combined to create all other shapes. An early (and crucial) step in some models of object recognition is determining which geons are present.