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Liono4ka [1.6K]
3 years ago
7

If HA, an acid, is 15 percent dissociated in a 2.00 molar solution, what is the Ka for the solution? A. 5.3 × 10-2 B. 6.4 × 10-3

C. 1.1 × 10-2 D. 1.2 × 10-2
Chemistry
1 answer:
poizon [28]3 years ago
7 0

Answer: 0.3

Explanation:

We know that

Ka = [H+] * [A-] / [HA]

And the acid is 15 % dissociated means that

[A-] / [HA] *100 = 15%

So

[A-] / [HA] = 0.15

Then we know that [H+] = [A-] = 2 molar

Replacing we have

Ka = 2 molar * 0.15 = 0.3

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Answer:

48%

Explanation:

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Assuming the 100% of CO2 react, the pressure will be:

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As the pressure rises just to 24.1atm the moles that react are:

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The increase in moles is of 0.48 moles, a 100% express an increase of 1mol. The mole percent that descomposes is:

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According to the illustration, the vanadium (V) oxide would be a catalyst.

<h3>What are catalysts?</h3>

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More on catalysts can be found here: brainly.com/question/12260131

#SPJ1

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Answer:

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Lead sulfate is insoluble in water and sinks in water

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