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Question: Answered & Verified by Expert
Light green crystals of ferrous sulphate lose water molecule and turn brown on exposure to air. This is due to its oxidation to
Chemistryd and f Block ElementsJEE Main
Options:
  • A $\mathrm{Fe}_2 \mathrm{O}_3$
  • B $\mathrm{Fe}_2 \mathrm{O}_3 \cdot \mathrm{H}_2 \mathrm{O}$
  • C $\mathrm{Fe}(\mathrm{OH}) \mathrm{SO}_4$
  • D $\mathrm{Fe}_2 \mathrm{O}_3+\mathrm{FeO}$
Solution:
1053 Upvotes Verified Answer
The correct answer is: $\mathrm{Fe}(\mathrm{OH}) \mathrm{SO}_4$
$\begin{aligned} & \mathrm{Fe}(\mathrm{OH}) \mathrm{SO}_4 \\ & \mathrm{FeSO}_4 \xrightarrow{\mathrm{H}_2 \mathrm{O}} \mathrm{Fe}(\mathrm{OH}) \mathrm{SO}_4\end{aligned}$

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