pH and concentration question help
Does anyone know how to get the answers to these questions.
Both of the answers are C but can anyone explain how to get the answer?
Both of the answers are C but can anyone explain how to get the answer?
(edited 1 year ago)
Original post by Den322221
Does anyone know how to get the answers to these questions.
Both of the answers are C but can anyone explain how to get the answer?
Both of the answers are C but can anyone explain how to get the answer?
This is a weak acid question.
Glycolic acid reacts in a 1:1 ratio with NaOH.
Use the titration data to find the mol of NaOH and hence mol glycolic acid.
To find the pH you must use the weak acid dissociation equation:
ka = [H+][A-]/[HA]
Don't forget that [H+] =[A-] and that you can approximate the dissociated acid concentration to that of the undissociated acid.
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