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umka21 [38]
2 years ago
11

Which of the following statements is/are true? I: The conjugate acid of C6H5NH2 is C6H5NH3+ II: An acid with Ka = 1x10−3 is stro

nger than an acid with Ka = 1x10−4 III: A strong acid will be completely dissociated at equilibrium A) Only I B) Only II C) I and III D) II and III E) I, II, and III
Chemistry
1 answer:
Anna [14]2 years ago
5 0

Answer:

E. I, II, and III.

Explanation:

I. C6H5NH2 + H2O --> C6H5NH3^+ + OH-

C6H5NH2 is a weak base means it is a good proton donor (strong conjugate acid).

II. Any aqueous acid with a pKa value of less than 0 is almost completely deprotonated and is considered a strong acid.

pka1 = - log[1 x 10^-3]

= 2

pka1 = - log[1 x 10^-4]

= 3

pka1 is a stronger acid.

III. A strong acid will be completely dissociated at equilibrium.

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Br2 + NaF —&gt; Which best completes the chemical equation?
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<u>Explanation</u>:

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  • Bromine will not have sufficient energy to replace fluorine and so it will not have energy which is sufficient to join because of low reactivity.  Among these fluorine represents the most reactive element among halogens.
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