Stoichiometric Point: Mol acid = mol base

[Anirudh Mahadev 1G]

In lecture today, 12/9, Dr. Lavelle said at the stoichiometric point mol acid = mol base. Would it be more accurate to say that at the point mol hydronium equals mol hydroxide? Since some acids are polyprotic and some bases can release 2 moles of hydroxide, like Ca(OH)2. For Ca(OH)2, if the moles of base were equal to moles of acid then it would be basic.

[Chem_Mod]

At the stoichiometric point, the moles of hydronium ion equals the moles of hydroxide only when a strong acid is mixed with a strong base. This will result in a neutral solution, which we saw in lecture with NaOH and HCl.

[Kaethe Zappacosta 2L]

Yes, when moles of hydronium equals moles of hydroxide, the titration has reached its stoichiometric point. When it is a strong acid/ strong base, the stoichiometric point will be ph of 7. When it is a weak base and a strong acid, the stoichiometric point will be a ph of below 7, and when it is a strong base/ weak acid the ph will be above 7.