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When potassium ferrocyanide crystals are...

When potassium ferrocyanide crystals are heated with concentrated sulphuric acid, the gas evolved is

A

`SO_(2)`

B

`NH_(3)`

C

`CO_(2)`

D

CO

Text Solution

Verified by Experts

The correct Answer is:
D
`K_(4)[Fe(CN)_(6)]+6H_(2)SO_(4)+6H_(2)Orarr2K_(2)SO_(4)+FeSO_(4)+3(NH_(4))_(2)SO_(4)+6CO`
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