Question

If you flow a solution of Mg CO3-- in water over a Cation resin, what will be in the outlet stream leaving the bed

Answer 1

In a a cation-exchange resin, the outlet stream leaving the bed will contain $H^{+}$ and $CO_3 ^{2-}$.

What is cation-exchange resin?

• A resin or polymer that serves as a medium for ion exchange is known as an ion-exchange resin or cation-exchange resin.
• It is an insoluble matrix (or support structure) made from an organic polymer substrate, typically appearing as tiny (0.25-1.43 mm radius) microbeads that are white or yellowish in color.
• The process is known as cation-exchange resin because the beads are often porous, providing a wide surface area on and inside them where the trapping of ions takes place along with the concomitant release of other ions.
• cation-exchange resin comes in many different varieties. Polystyrene sulfonate is the main ingredient in most commercial resins. Many diverse separation, purification, and decontamination techniques use cation-exchange resin.
• The most typical examples are water filtration and water softening.

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