You reply to the response this way. When you read the response, scroll down and you will find a box below the response and that is where you put you next thoughts. We get some long threads that way on this board. First, for 0.1M HCl vs 0.1 M Ba(OH)2, it will take 1/2 the volume of Ba(OH)2 because it is 0.2M in hydroxide ion.
For acetic acid vs NaOH, the pH at the beginning is higher than for HCl. That's because HCl is a strong acid and ionizes 100% so the pH of a 0.1M soln of HCl is 1.0. For acetic acid that is 0.1M, that is a weak acid, the pH starts about 2.9. The equivalence point of the acetic acid/NaOH is not at 7.0 but about 8. The portion above the equivalence point is just excess NaOH so it looks about the same. Here are a bunch of sites that will show you how those look.
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