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HARD OCR CHEMISTRY buffer question

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can anyone help with this hard question ?
(edited 8 years ago)
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Sorry you've not had any responses about this. :frown: Are you sure you’ve posted in the right place? Posting in the specific Study Help forum should help get responses. :redface:

I'm going to quote in Tank Girl now so she can move your thread to the right place if it's needed. :h: :yy:

Spoiler

It looks like your teacher has already put in the answer for you.
Mg reacts with the ethanioc acid to form ethanoate ions and hydrogen gas in a redox reaction.
From a balanced equation, 0.5 mol of ethanoic acid is turned into 0.5 mol of ethanoate ions.
So if the original concentration of both was 1 mol per dm3, then the new concentration of the ethanoate ion is 1.5, and of the acid is 0.5.
Now you use the buffer solution equations to find the pH.

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