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2 years ago

Which of the following acids (listed with pKa values) and their conjugate base would form a buffer with a pH of 8.10?

Chemistry

1 answer:

Amiraneli [1.4K]2 years ago

7 0

Answer:

Explanation:

A buffer is a solution that can resist abrupt changes in pH when acids or bases are added. It is formed by two components:

A weak acid and its conjugate base.
A weak base and its conjugate acid.

In this case, acid and base are defined according to Bronsted-Löwry theory, which states that acids are substances that release H⁺ and bases are substances that accept H⁺. Therefore, when an acid loses an H⁺ transforms into its conjugated base. For example, HF/F⁻ is a conjugate acid-base pair.

In buffers, when an acid is added, it reacts with the base to diminish its amount:

F⁻ + H⁺ ⇄ HF

Also in buffers, when a base is added, it reacts with the acid to diminish its amount:

HF + OH⁻ = F⁻ + H₂O

The optimum pH range of work of a buffer system (known as buffer range) is between 1 unit less and 1 unit more of pH than its pKa.

So, the buffer formed by HClO/ClO⁻ works optimally in the pH range 6.54-8.54. Since pH = 8.10 is in that interval, this would be the optimal choice.

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2 years ago

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Dmitrij [34]

Answer:

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Explanation:

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2 years ago

Which phrases describe clastic sedimentary rocks? Check all that apply.

Romashka [77]

Explanation:

A clastic sedimentary rock is a rock that is formed from pre-existing rock materials and minerals. This materials have been transported to their new positions by the agents of denudation.

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Examples are breccia, conglomerates, e.t.c.

Learn more:

Sedimentary rocks brainly.com/question/2740663

#learnwithBrainly

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2 years ago

Would nitrogen gas be a mineral if it has a chemical formula of n2?

STALIN [3.7K]

Answer:

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Explanation:

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2 years ago