Questions and answers

What is a cationic exchanger?

What is a cationic exchanger?

: a cation-exchange agent that can exchange its cation with the cation or cations of a solution passed through it and that consists of an insoluble saltlike or acidic substance:as. a : a natural or synthetic zeolite.

What is the difference between cation and anion exchanger?

The main difference between cation and anion resins is that one is positively charged (cation) and the other is negatively charged (anion). This makes them useful in removing different types of contaminants (which will also vary depending on their size and chemical composition).

Which is an anion exchanger?

Anion exchange is the process in which anions in the form of acids are adsorbed by a basic substance. It describes the exchange of ions in which one anion (as chloride or hydroxide) is substituted for one or more other anions (as sulfate). It is highly effective on negatively charged ions such as: Bicarbonate.

What is cation exchanger example?

The most prevalent cation exchangers are strongly acidic resins with sulfonic acid groups (–SO3H) and weakly acidic resins with carboxylic acid groups (–COOH). In both the resins, hydrogen ions serve as exchangeable ions with metal cations.

What 3 factors affect the selectivity of ion exchangers?

The factors that affect separation during ion exchange chromatography include the surface area of the stationary phase (resin bead size); the density of exchange sites on the stationary phase surface (cross-linkage); the flow rate of the mobile phase (resin bead size and column geometry; system pressure in high- …

Why is cation exchanger before anion exchanger?

The cation resin is usually located before the anion resin: otherwise if the water contains any hardness, it would precipitate in the alkaline environment created by the OH— form anion resin as Ca(OH)2 or CaCO3, which have low solubility.

What is the most common regeneration method used today?

Artificial regeneration. Artificial regeneration is accomplished by the planting of seedlings (the most common method) or by the direct planting of seeds. Direct seeding is reserved for remote or inaccessible areas where seedling planting is not cost-effective.

Why is cation used before anion?

Which group is an example of anion exchanger?

PHENOLS | Solid-Phase Extraction For phenol analysis, synthetic anion exchangers (polymers and chemical-bonded silicas) are generally applied because of their durability and chemical resistance. The typical functional groups of strong or weak basic anion exchangers are –CH2–N+(CH)3 and – N + H ( R ) 2 − respectively.

Is a cation positive?

What is a cation? A cation has more protons than electrons, consequently giving it a net positive charge.

What are the different types of ion exchangers?

Ion exchangers are either (i) cation exchangers, which exchange positively charged ions—cations, or (ii) anion exchangers which exchange negatively charged ions—anions….Ion Exchanger

  • pH.
  • Adsorbent.
  • Zeolite.
  • Adsorption.
  • Anion.
  • Cation.
  • Ion.
  • Resin.