A 100 L Buffer Solution Is 0

question 172

Multiple Choice

A 1.00 L buffer solution is 0.250 mol L^-1 in HF and 0.250 mol L^-1 in NaF. Calculate the pH of the solution after the addition of 100.0 mL of 1.00 mol L^-1 HCl. The K_a for HF is 3.5 × 10^-4.

• A) 3.09
• B) 4.11
• C) 3.82
• D) 3.46
• E) 2.78

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Definitions:

Continental Margin

The zone of the ocean floor that separates the thin oceanic crust from thick continental crust, including the continental shelf, slope, and rise.

Plate Boundary

The edges where two tectonic plates meet, which can be divergent, convergent, or transform, leading to various geological features and events.

Normal Faults

Fractures in the Earth's crust where the rock above the fault plane has moved down relative to the rock below.

Crust Thicken

Crust thickening refers to the increase in the Earth's crust's depth due to geologic processes, such as the accumulation and compression of sediments or the intrusion of igneous rock.