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Author Question: A monoprotic weak acid when dissolved in water is 0.66% dissociated and produces a solution with a ... (Read 296 times)

craiczarry

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Question 1

A 4.5 x 10–3M solution of a weak acid is 6.3% dissociated at 25ºC. In a 4.5 x 10–4M solution, the percentage of dissociation would be:

the same.
> 6.3%.
< 6.3%.
zero.
Need to know the Kaof the acid to answer this.

Question 2

A monoprotic weak acid when dissolved in water is 0.66% dissociated and produces a solution with a pH of 4.15. Calculate the Ka of the acid.

6.6 × 10–3
1.1 × 10–2
4.7 × 10–7
Need to know the initial concentration of the acid.
None of these are correct.


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Marked as best answer by craiczarry on Mar 21, 2021

alexisweber49

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craiczarry

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Reply 2 on: Mar 21, 2021
Excellent


frankwu0507

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

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