Home
Class 12
CHEMISTRY
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_4Fe(CN)_6` with conc. `H_2SO_4` gives CO.
`({:(K_4Fe(CN)_6+3H_2SO_4to,2K_2SO_4+FeSO_4+6HCN),(HCN+2H_2Oto,HCOOH+NH_3"]"xx6),(HCOOHoverset("conc."H_2SO_4)to,H_2O+CO"]"xx6),(2NH_3+H_2SO_4to,(NH_4)_2SO_4"]"xx3):})/ul(K_4Fe(CN)_6+6H_2SO_4+6H_2Oto2K_2SO_4+FeSO_4+6CO+3(NH_4)_2SO_4)`
Promotional Banner

Topper's Solved these Questions

  • THE OXYGEN FAMILY

    DINESH PUBLICATION|Exercise Selected Straight objective|34 Videos

  • THE OXYGEN FAMILY

    DINESH PUBLICATION|Exercise MATRIX MATCH|2 Videos

  • THE OXYGEN FAMILY

    DINESH PUBLICATION|Exercise PREPARATORY PACKAGE|14 Videos

  • THE NOBLE GASES

    DINESH PUBLICATION|Exercise Brain Teasers - 20|40 Videos

  • THE P-BLOCK ELEMENTS

    DINESH PUBLICATION|Exercise Brain Storming Multiple Choice Questions (McQs)|9 Videos

Similar Questions

Explore conceptually related problems

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

Concentrated sulphuric acid is not

Which potassium dichromate crystal are heated with conc. HCl

When K_2 Cr_2 O_7 crystals are heated with conc. HCl, the gas evolved is

On heating potassium ferrocyanide with concentrated sulphuric acid produces a neutral gas A. The gas A on treament with caustic soda under high pressure prouded B. What are A and B respectively.