Stoich and End Points

[cmatsumura1E]

Why is it important for an end point to be within 1 pH unit of the stoichiometric point?

[Lok Yin Wong Dis 3O]

It is because the closer the end points are to the equivalence point, we have a smaller indicator error and the more accurate the titration will be. I think we both agree we like a more accurate result and less error when we are doing scientific research right?

[saialam 1A]

Also once you are that close, even the smallest addition of the titrant(including a single drop) can shift the ph may past the stoichiometric point.

[604599327]

The key is to find the point at which the acid or base of the sample and the respective acid or base of the titration reach a balance (stoichiometric point), thus it would be important that the end point be close to the stoichiometric point in an accurate reaction.