Consider the titration curves (labeled a and b) for two weak acids, both titrated with 0.100 M NaOH.

(i) Which acid solution is more concentrated?

Video transcript

Hey everyone today, we're given to attrition curves too weak acids that have been tight traded with a strong base and we're being asked to find which of the following statements A through D. Are true. Now, taking a look at the first answer, choice, asset is more concentrated than asset B. This one is actually true. If we take a look at the equivalence point, which is right here in the start, are steep increase in ph on the titillation curve, we can see that the equivalence point for the first base acid A. This is A and this is B for the first base is about 11. It's at a ph of about 11. Meanwhile, for the asset B, It's closer to about 9.8. Since the equivalence point is higher, that means that asset a must have a higher concentration than asset B because it requires more or a higher volume of base in order to sharply change the ph to reach that equivalence point. Therefore, A is our answer. I hope this helps. And I look forward to seeing you all in the next one.