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Question
Identify the cations in the following case:
NaOH solution, when added to the Solution (A), gives a reddish brown precipitate
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Solution
Fe3+ ion
FeCl3 + 3NaOH 
Fe(OH)3 + 3NaCl
(Reddish brown ppt.)
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Sodium hydroxide solution is added to solution A. A white precipitate is formed which is soluble in excess sodium hydroxide. Name the metal ion present in A.
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| List X | List Y |
| (i) Pb2+ | (A) Reddish Brown |
| (ii) Fe2+ | (B) White insoluble inexcess |
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When excess sodium hydroxide is added to calcium nitrate solution
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