Question

What is the experimentally determined pH at the equivalence point using your strong acid-strong base titration curve? Explain any discrepancy from the expected value

Answer 1

Answer:

At strong acid-strong base titration the typical equivalence point occur at a pH of 7.

Explanation:

At strong acid-strong base titration, the typical equivalence point occurs at a pH of 7, because most of the conjugate base of a strong acids and the conjugate acid of a strong bases don't hydrolyze. But in the cases, the strong acids produce anions (conjugate base) that could react with water producing hydroxides and raising the pH of the equivalence point.

$X^{-} + H_{2}O$ ⇄ $XH + OH^{-}$

Evenly, a strong base cold produces cations (conjugate acid) that react with water producing protons and decreasing the pH of the equivalence point.

$HX +H_{2}O$ ⇄ $X^{-} + H_{3}O^{+}$