The indicator used in neutralizing CH₃COOH and NaOH solution has pH range of

Kevin_Aro

3 years ago

In a titration of CH3COOH (acetic acid) and NaOH (sodium hydroxide), an indicator such as phenolphthalein can be used to signal when the equivalence point has been reached ¹. Phenolphthalein changes color from colorless to pink at a pH range of about 8.2-10 ¹. So, in this case, the pH range of the indicator used would be **C. 8-10**.

Source: Conversation with Bing, 17/04/2023
(1) 8.7: Titrations - Neutralization and Stoichiometry. https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Book%3A_Introductory_Chemistry_Online_(Young)/08%3A_Acids_Bases_and_pH/8.7%3A_Titrations_-_Neutralization_and_Stoichiometry.
(2) 7.1: Acid-Base Buffers - Chemistry LibreTexts. https://chem.libretexts.org/Courses/Bellarmine_University/BU%3A_Chem_104_(Christianson)/Phase_2%3A_Understanding_Chemical_Reactions/7%3A_Buffer_Systems/7.1%3A_Acid-Base_Buffers.
(3) Neutralization - Chemistry LibreTexts. https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Supplemental_Modules_(Physical_and_Theoretical_Chemistry)/Acids_and_Bases/Acid_Base_Reactions/Neutralization.

christy1234

9 years ago

explanation pls

Tomek05

3 months ago

i really a staight forward answer to this question

Chloesicedlatte

1 year ago

tbh i'm not completely sure why C is the answer i blv you're meant to perform calculated guessing so CH3COOH or acetic acid is a weak acid and NaOH or sodium hydroxide is a strong base so you need a strong acid to assist the acetic acid in balancing out the solution and a pH range of 3-5 is the closest range to a strong acid among the options so you're answer shld be A.