Dowex 2:
* Active Residue: Quaternary ammonium groups (NR₄⁺)
* Functionality: Strongly basic anion exchange resin. The positively charged quaternary ammonium groups attract and bind negatively charged anions.
Dowex 50:
* Active Residue: Sulfonic acid groups (SO₃⁻)
* Functionality: Strongly acidic cation exchange resin. The negatively charged sulfonic acid groups attract and bind positively charged cations.
In summary:
* Dowex 2 is designed to remove anions from solutions.
* Dowex 50 is designed to remove cations from solutions.
Key Points:
* "Dowex" refers to a line of ion exchange resins produced by Dow Chemical Company.
* "2" and "50" refer to specific types within the Dowex line, distinguishing them by their functionality.
* "Active residues" are the functional groups responsible for the ion exchange process.
Let me know if you have any other questions.
