Chemical test to distinguish between ferric salt and ferrous salt
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litmus paper test is used to find between ferric salt and ferrous salt
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Both when added to Sodium Hydroxide{caustic soda(NaOH)}
Ferric Salt (FeCl3) + 3NaOH = Fe(OH)3 [Reddish Brown] + 3NaCl (Colourless)
Ferrous salt (FeSO4) + 2NaOH = Fe(OH)2 [Dirty Green] + Na2SO4 (Colourless)
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