Find the number of ions formed on dissolving one molecule of FeSO4(NH4)2SO4.6H2O in water:
A
2
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B
11
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C
3
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D
5
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Solution
The correct option is D 5 It is a double salt : FeSO4(NH4)2SO4.6H2O ⟶ Fe2+ + 2SO2−4 + 2NH+4 + 6H2O So the number of ions formed are 5. Hence option D is correct.