Question

how do you test acetic acid without indicators?

Answer 1

Answer:

A common acid-base indicator is phenolphthalein. Phenolphthalein is colorless in acidic solution, but changes to pink when the solution becomes basic. At the equivalence point, the moles of acetic acid are equal to the moles of sodium hydroxide, and the solution will turn pink as more sodium hydroxide is added.

Hope it helps you!!!

Answer 2

An indicator is used to show the endpoint of any titration. Here we have to identify the presence of acetic acid without the indicator.

Explanation:

Acetic acid can be detected as

• Take the sample in the spatula. heat the spatula in a bunsen burner

• Compound burns with non-smoky flame.

• It indicates the compound is aliphatic.

• Now take a test tube with the help of a pipette take 1ml  acetic acid

• Now add few drops of sodium bicarbonate with the help of a filler

• Here we observe brisk effervescence evolving from the test tube

• Colourless gas with brisk effervescence is evolved

• This is due to the decarboxylation of sodium carbonate.

CH₃COOH +NaHCO₃ →CH₃COONa + H₂O +CO₂