What is the pKa of acetic acid? Chemistry Acids and Bases pH calculations 1 Answer anor277 Oct 19, 2016 For acetic acid, #pK_a=4.76# Explanation: Is this a strong or weak acid? Answer link Related questions How do you determine ph of a solution? How do you determine pH at an equivalence point? How do you determine pH from molarity? What does alkalinity mean? What is a base? How do acid base indicators change color? What is a neutral pH? How does alkalinity affect pool water? Why is pH important in drinking water? How can I calculate the pH of a solution? See all questions in pH calculations Impact of this question 3390 views around the world You can reuse this answer Creative Commons License