The K_a for HCN Is 4

question 80

Multiple Choice

The K_a for HCN is 4.9 × 10^-10.What is the value of K_b for CN^-?

• A)2.0 × 10^-5
• B)4.0 × 10^-6
• C)4.9 × 10⁴
• D)4.9 × 10^-24
• E)2.0 × 10⁹

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Definitions:

Climate

The long-term pattern of weather in a particular area, defined by variables such as temperature, precipitation, and wind.

Sea Level

The average height of the ocean’s surface between high and low tide, used as a reference point for measuring the elevation or depth of geographical locations.

Glaciers Evidence

Indicators or markers left by glacier movements, such as moraines, striations, and changes in landscape topography.

V-Shaped Valleys

Valleys carved by rivers, characterized by their steep sides and narrow bottom, forming a "V" shape in cross-section.