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Passage - II : The solid(A) is a labor...

Passage - II :
The solid(A) is a laboratory reagent. Give the following reactions.
i) On strongly heating it gives two oxides of sulphur
ii) On adding aqueous NaOH solution to its aqueous solution a dirty green precipitate is obtained, which starts turning brown on exposure to air.
The two oxides of sulphur are

A

`SO_(2), SO_(3)`

B

`SO, SO_(2)`

C

`SO, SO_(3)`

D

`S_(2)O, S_(2)O_(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
`FeSO_(4).7H_(2)O underset(-7H_(2)O) overset(300^(@)C)to 2FeSO_(4) overset("high T")to Fe_(2)O_(3)+SO_(2)+SO_(3)`.
`Fe_(2)(SO_(4))_(3)3NaOH to underset("Dirty green ppt") (2Fe(OH)_(3)+Na_(2)SO_(4))` Oxides are `SO_(2),SO_(3)`.
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