Determine the Ammonia Concentration of an Aqueous Solution That Has

question 155

Multiple Choice

Determine the ammonia concentration of an aqueous solution that has a pH of 11.00.The equation for the dissociation of NH₃ (K_b = 1.8 × 10^-5) is
NH₃(aq) + H₂O(l) ⇌ NH₄⁺(aq) + OH^-(aq) .

• A)3)0 M
• B)0)056 M
• C)1)8 × 10^{- 2} M
• D)1)0 × 10^-3 M

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Definitions:

Trypanosomes

Single-celled parasitic organisms responsible for diseases like African sleeping sickness and Chagas' disease, transmitted by insect vectors.

Foraminiferans

Single-celled protists with shells, known for their role in marine ecosystems and as indicators of environmental change.

Rhizarians

A group of mostly unicellular eukaryotic organisms that include foraminifera, radiolarians, and cercozoans, characterized by their amoeboid movement and complex shell structures.

Coccolithophorids

A group of planktonic algae that produce calcium carbonate plates known as coccoliths, contributing significantly to marine sediments.