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Chapter 18: Q-18-2P (page 873)

Question: Why does hydration inactivates FeBr3 ?

Short Answer

Expert verified

The hydrated ferric bromide accepted a lone pair of electrons from the water, and they cannot accept more lone pair electrons from other atoms.

Step by step solution

01

Hydration

The hydration is a process which involves the addition of water. The reaction of hydration involves the donation of lone pair of electrons from the oxygen atom of water.

02

Explanation

The ferric bromide, FeBr3 is a lewis acid and can accept electrons. When the ferric bromide is exposed to air, it rapidly undergoes a reaction with water or moisture.

The adduct formed is shown below.

This occurs by accepting a lone pair of electrons from the water molecule, and hence it cannot further take any lone electron pairs to activate bromine as a nucleophile.

Therefore, the hydration inactivates the ferric bromide.

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