I am attempting to do a lab that requires the determination of an unknown diprotic acid using a titration curve. I have graphed my data but I am unsure what point to use as my eq. point. In my lab manual it says I may use the second or first eq. point but the second is often clearer. I am not given a specific equation to determine the point. In your opinion, which point should i use to continue my calculations? There was a very large jump between 20 and 22ml NaOH leading to the pH jumping from 6.7 to 10.47. Should I use 10.47 as my eq point?