Which of the following species is the main contributor to the pH at the equivalence point of the titration of HCl with NaOH? A) H3O+ B) NaCl C) Na+ D) H2O
Understand the Problem
The question is asking about the species that contributes to the pH at the equivalence point during the titration of hydrochloric acid (HCl) with sodium hydroxide (NaOH). To determine the correct answer, we need to consider what occurs at the equivalence point of a strong acid and strong base titration.
Answer
H2O
The main contributor to the pH at the equivalence point of the titration of HCl with NaOH is H2O.
Answer for screen readers
The main contributor to the pH at the equivalence point of the titration of HCl with NaOH is H2O.
More Information
During the titration of a strong acid with a strong base, like HCl with NaOH, the neutralization reaction results in the formation of water and a neutral salt. At the equivalence point, the pH is determined by the neutral water as the solution pH is typically around 7.
Tips
A common mistake is assuming the salt influences the pH; however, the pH of the solution is neutral at the equivalence point.
Sources
- Titration of a Strong Acid With A Strong Base - Chemistry LibreTexts - chem.libretexts.org
AI-generated content may contain errors. Please verify critical information
