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Which of the following is a double salt that dissociates completely into simple ions in water?
AMohr's salt
BK4[Fe(CN)6]
C[Co(NH3)6]Cl3
D[Ni(CO)4]
Answer & Solution
Correct answer: A. Mohr's salt
Mohr's salt, FeSO4.(NH4)2SO4.6H2O, is a double salt and gives Fe2+, NH4+ and SO4 2- ions in solution.
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