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Which of the following statements regarding ferric salts is not correct ?

$\begin {array} {1 1} (A)\;\text{In the vapour phase, ferric chloride corresponds to the dimer structure} \\ (B)\;\text{The aqueous solution of ferric salt is alkaline} \\ (C)\;\text{Ferric chloride is used as an antiseptic}\\ (D)\;\text{The formula of ferric alum is $Fe_2(SO_4)_3.(NH_4)_2SO_4.24H_2O$} \end {array}$

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Answer : The aqueous solution of ferric salt is alkaline
The aqueous solution of ferric salt is acidic owing to the reaction.
$Fe^{3+}+H_2O \leftrightharpoons Fe(OH)^{2+}+H^+$
answered Jul 31, 2014 by thanvigandhi_1
 

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