In a Solution Prepared by Dissolving 0

question 104

Multiple Choice

In a solution prepared by dissolving 0.100 mol of propionic acid in enough water to make 1.00 L of solution, the pH is observed to be 1.35. What is K_a for propionic acid (HC₃H₅O₂) ?

• A) 4.5 × 10^-2
• B) 2.0 × 10^-2
• C) 5.0 × 10^-12
• D) 3.6 × 10^-2
• E) none of these

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Definitions:

Rifts

Linear zones where the Earth's crust and lithosphere are being pulled apart, often associated with volcanic activity and the formation of new oceanic crust.

Basalts

Dark, fine-grained volcanic rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron.

Ural Mountains

A mountain range that runs approximately from north to south through western Russia, serving as a natural dividing line between Europe and Asia.

Plate Boundary

The border between two tectonic plates, which can be sites of earthquakes, volcanoes, and mountain building.