Problem: The following drawings represent solutions at various stages of the titration of a weak acid, HA, with NaOH. (The Na+ ions and water molecules have been omitted for clarity.) To which of the following regions of the titration curve does each drawing correspond.(iii)

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We are asked which of the following regions of the titration curve does each drawing correspond


1) before addition of NaOH

  • The solution should be mostly HA.


before addition of NaOH: image (iii) 



2) after addition of NaOH but before equivalence point

  • HA should be lessened and A- should start to appear

after addition of NaOH but before equivalence point: image (i) 


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Problem Details

The following drawings represent solutions at various stages of the titration of a weak acid, HA, with NaOH. (The Na+ ions and water molecules have been omitted for clarity.) 

Four diagrams: i) Two HA, four A- ii) Six A-, 2 OH- iii) Six HA iv) Six A-

To which of the following regions of the titration curve does each drawing correspond.

(iii)

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Acid and Base Titration Curves concept. You can view video lessons to learn Acid and Base Titration Curves. Or if you need more Acid and Base Titration Curves practice, you can also practice Acid and Base Titration Curves practice problems.

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Based on our data, we think this problem is relevant for Professor Autschbach's class at UB.