The Concentration of Pb²⁺ in an Aqueous Solution Is 5

question 47

Multiple Choice

The concentration of Pb²⁺ in an aqueous solution is 5.5 × 10^-3 M.What concentration of SO₄^2- is required to begin precipitating PbSO₄? The K_sp of PbSO₄ is 2.5 × 10^-8.

• A) 1.4 × 10^-10 M
• B) 4.5 × 10^-6 M
• C) 1.6 × 10^-4 M
• D) 8.3 × 10^-4 M
• E) 2.9 × 10^-2 M

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Definitions:

Frame of Reference

A set of criteria or stated values in relation to which measurements or judgments can be made.

Allocentric

An adjective describing perspectives or spatial representations not centered on the observer, but instead based on the environment or objects within it.

Egocentric

A perspective where an individual interprets the world solely from their own viewpoint, often neglecting or misunderstanding others' perspectives.