Best Answer

When you're attempting to extract benzoic acid from other organic compounds, it is necessary to change its pH by adding a layer of an basic compound such as 1M NaOH so that the benzoic acid then can be separated from the organic layer within a separatory funnel. When in NaOH, the benzoic acid loses a proton and thus becomes its conjugate base (the benzoate ion). The benzoate ion is charged and thus become miscible in the aqueous layer. To extract benzoic acid (ie get it to precipitate out of solution), a strong acid such as HCl must be added to solution. After the extraction, lower the pH of the solution, and recrystalize (use ice after the recrystalization to get benzoic acid crystals to crash out).

User Avatar

Wiki User

โˆ™ 2008-08-29 20:32:46
This answer is:
User Avatar
Study guides


20 cards

How does a buffer work

What happens in a neutralization reaction

What is a conjugate acid-base pair

Why is water considered to be neutral

See all cards
642 Reviews

Add your answer:

Earn +20 pts
Q: Why is benzoic acid is extracted into ether then extracted into an alkali solution prior to being precipitated with strong acid in its preparation with grignard reagent?
Write your answer...
Still have questions?
magnify glass
Related questions

Provide methods for preparing the following compounds by the grignard method?

The Grignard reaction is when a solution of carbonyl is added to a Grignard reagent. Grignard reactions are slow or sluggish.

What is peptization?

Peptization is the process by which precipitated solution is converted into colloidal solution.

How is aluminum extracted?

it is extracted via electrolysis in a solution of cryolite

How is aluminium extracted?

it is extracted via electrolysis in a solution of cryolite

Do the crystals precipitated from a solution have unique crystal forms?

Crystals precipitated from a solution has unique crystal forms. These are formed with the subsequent growth in its nuclei and the solution contains more solute entities that impacts the crystal formation.Ê

What is ionic precipitation?

This is the preparation of Insoluble Salts.Insoluble Salts can be made by precipitation. This involves mixing a solution that contains its Positive ions with another solution that contains its Negative ions, For example , insoluble silver chloride is precipitated when solutions of silver nitrate and sodium chloride solutions are mixed together.

What do chemical rock form?

Chemical rocks are formed of minerals which have precipitated or crystallized out of solution.

How do you prepare 10ppm solution from 100ppm solution?

Preparation of 10ppm solution from 100ppm solutin

When silver nitrate solution was added to your product what did you observe?

If chloride is present silver chloride with get precipitated..

How do you precipitate fluoride from water?

Add silver nitrate solution. flouride is precipitated as silver fluoride

Which sulphide is completely precipitated only when the acidic solution is made dilute?

PbSby karan jain

Why sodium carbonate is used in preparation of thiosulphate solution?

To ensure the stability of the solution

People also asked