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Explain the following (i) A little ac...

Explain the following
(i) A little acid is always added in the preparation of aqeous ferrous sulphate solution
(ii) Aqueous solution of mercuric chloride and stannous chloride cannot exist together .
(ii) Ferric iodide is very unstable but ferric chloride is not.
(iv) `Hg^(2+) and Hg_(2)^(2+)` salts are colourless generaly .

Text Solution

Verified by Experts

(i) To prevent hydrolysis
(ii) They reacti with each other `HgCl_(2)+SnCl_(2) to Hg + SnCl_(4)`
(iii) `I^(-)` is strong reducing agent .
(iv) Due to absence of unpaired electron
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