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Andrej [43]
3 years ago
8

What is the percent yield of potassium chloride if potassium reacts with excess chlorine gas to produce 10.3 grams of potassium

chloride, but the theoretical yield is 12.9 grams?
a. 33.2%
b. 52.4%
c. 79.8%
d. 95.3%
Chemistry
1 answer:
omeli [17]3 years ago
7 0
The percent yield of the reaction is equal to actual yield / theoretical yield * 100%. So for this question, the percent yield is 10.3/12.9*100%=79.8%. So the answer is c.
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The pH of the monoprotic weak acid is 2.79.

<h3>What are weak acids?</h3>

The weak acids are the acids that do not fully dissociate into ions in the solution. Strong acids fully dissociate into ions.

The chemical reaction is HA(aq) ⇄ A⁻(aq) + H⁺(aq).

c (monoprotic acid) = 0.33 M.

Ka = 1.2·10⁻⁶

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[HA] = 0.33 M - x

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pH = -log[H⁺]

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Thus,  the pH of the monoprotic weak acid is 2.79

To learn more about weak acids, refer to the below link:

brainly.com/question/13032224

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