Question

Explain the ion exchange method and illustrate with an example

Answer 1

Ion exchange is a process used to remove dissolved ions from a solution by electrostatic sorption into ion exchange materials (most commonly into ion exchange resins). The removed ions are replaced with equivalent amounts of other ions of the same charge. Ion exchange is most commonly used for purification purposes, but is also widely implemented in the separation and extraction of valuable substances.

Answer 2

When an element has not a complete octet then it exchange its ions. Negative ions are known as anion and positive ions are known as cation. An positively charged electron give exchange its ion with negatively charged electron in order to complete its octet. For example ; NaCl where Na is positively charged and Cl is negatively charged. Both of them exchange their icons to complete their octet.