Question

Write chemical reaction when iodine ion replace daizonium as a daizoniumsalt

Answer 1

We’ve studied displacement reactions before, by looking at reactions of metals. More reactive metals will react to remove less reactive metals from compounds and replace them in the compound. In A-Level this is taken further to look at the non-metals – and it works exactly the same way.
In displacement reactions the more reactive element will displace a less reactive element for example…
2KI + Cl2 –> 2KCl + I2
As chlorine is more reactive than Iodine it replaces (or displaces) the iodine in the compound.
You can use this type of experiment to look at the reactivity of halogens.