Question

Explain FeCl3 is acidic​

Answer 1

$\huge \bf \underline \red{❥} \underline \purple{A} \underline \pink{n} \underline \orange{s} \underline \blue{w} \underline \green{e} \underline \red{r} \purple{:↦}$

• FeCl3 is a fairly strong Lewis acid, in which Fe exhibits 5 electrons in d-orbital and 0 electron in s-orbital. Because of their higher energy these empty orbitals (dxy and dx2-y2) cannot be filled by the electrons from Fe3+, but these can readily accept electron from a Lewis base and results in acidic solution.

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Answer 2

Answer:

An aqueous solution of FeCl3 salt undergoes hydrolysis and forms HCl. This strong acid releases H+ ions in the solution. Hence, the resulting solution is acidic and turns blue litmus turns red.

PH OF FECL3 ==2.0

It is hygroscopic ..