The Concentration of Mg²⁺ in Seawater Is 5

question 131

Multiple Choice

The concentration of Mg²⁺ in seawater is 5.0 * 10^-2 M. What hydroxide concentration is needed to remove 90% of the Mg²⁺ by precipitation (For Mg(OH) ₂, K_sp = 1.2 * 10^-11.)

• A) 5.1 * 10^-5 M
• B) 4.9 * 10^-5 M
• C) 4.7 * 10^-5 M
• D) 4.5 * 10^-5 M
• E) None of the above

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Definitions:

Oligopoly

A market structure characterized by a small number of firms dominating the market, where each has significant control over prices and supply.

Product Differentiation

The process of distinguishing a product or service from others in the market to make it more attractive to a particular target market.

Oligopoly Market

A market structure characterized by a small number of firms controlling a large majority of the market share, leading to limited competition.

Output

The total amount of goods and services produced by an economy or a production process, serving as a key indicator of economic health.