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Which of the following in incorrect?...

Which of the following in incorrect?

A

`H_(2)SO_(4)` reach with `PCl_(5)` to produces `SO_(2)Cl_(2)`

B

`K_(4)[Fe(CN)_(6)]` reacts with concentrated `H_(2)SO_(4)` to produces `CO_(2)`

C

Solid `KCIO_(3)` on heating with concentrated `H_(2)SO_(4)` produces `CIO_(2)`

D

`H_(2)SO_(4)` forms `SO_(3)` on treatment with phosphorous pentoxides

Text Solution

Verified by Experts

The correct Answer is:
2
On heating potassium ferroeyanide with concentrated `H_(2)SO_(4),Co` is evolved:
`K_(4)Fe(CN)_(6)+6H_(2)SO_(4)+6H_(2)Orarr2K_(2)SO_(4)+FeSO_(4)+3(NH_(4))_(2)SO_(4)+6CO`
One or both the hydroxyl groups can be replaced by `Cl` on treatment with `PCl_(5)`
` (##RS_P2_CHM_C07_E01_184_S01.png" width="80%">
On heating potassium chlorate with concentrated sulphuric acid, chloride dioxide is evolved with explosion:
`2KClO_(3)+3H_(2)SO_(4)rarr3KHSO_(4)+HClO_(4)+2ClO_(2)+H_(2)O`
Dehydration of concentrated `H_(2)SO_(4)` in ht epresence of `P_(4)O_(10)` Produces `SO_(3)`:
`H_(2)SO_(4)+P_(2)O_(5)rarr2HPO_(3)+SO_(3)`.
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