A 1000 ML Sample of 0

question 44

Multiple Choice

A 100.0 mL sample of 0.20 M HF is titrated with 0.10 M KOH.Determine the pH of the solution before the addition of any KOH.The K_a of HF is 3.5 × 10^-4.

• A)4.15
• B)0.70
• C)2.08
• D)3.46
• E)1.00

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Definitions:

Mycorrhizae

A symbiotic association between a fungus and the roots of a vascular host plant, beneficially affecting nutrient uptake and resistance to pathogens.

Algae

Photosynthetic organisms that are primarily aquatic and can be either unicellular or multicellular.

Lichens

Lichens are symbiotic associations between a fungus and a photosynthetic partner, usually algae or cyanobacteria, living together in a mutually beneficial relationship.

Edible Fungi

Organisms from the fungi kingdom that are safe for human consumption.