Question

Organic Chemistry Lab: Separation and Identification of Unknown Compounds

Explain why the addition of acid (3 M HCl(aq)) or base (3 M NaOH(aq)) will not separate the neutral compound into the aqueous layer?

List four distinct impurities found in the isolated acid. Assume that the procedure was followed exactly and that there was no human error. About the procedure: the acid was isolated via Vacuum Filtration after precipitated with 12M HCl and cooled in an ice-water bath.

Answer 1

• Separation of acidic and basic compounds from extract are based on acid-base chemistry.
• Acidic compounds gives salt with base like NaOH and get precipitated followed by filteration.
• Similarly basic compounds gives ppt with with acid like aq HCl.
• But neutral compound doesnt react with acid or base so it can be separateted by using either acid or base.
• In case of acid phenolic compounds also can be found as impuritties.
• in your procedure you have used an acid for ppt of acid it niot clear?
• plz write more