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Calculate amount of acid needed in a solution to lower pH

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seerrah_:
Hi,

I can't figure out the following problem..

When a 30mM (aq) solution of sodium acetate was prepared in the lab, it had a pH of 8.8. Calculate the amount of acetic acid (in grammes) to be added to 0.5L of this sodium acetate solution in order to bring the pH to the target value of 5.00.

Any help would be greatly appreciated!! :)

chenbeier:
Do you know the Henderson-Hasselbalch equation?

seerrah_:

--- Quote from: chenbeier on April 13, 2019, 06:18:41 AM ---Do you know the Henderson-Hasselbalch equation?

--- End quote ---

Yes I do, I’m just confused how to apply it to this question? (not v. good at chemistry!)

Borek:
Please don't cross post.

Locked here.

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