Home
Class 12
CHEMISTRY
How is the presence of SO(2) detected ?...

How is the presence of `SO_(2)` detected ?

Text Solution

Verified by Experts

`SO_(2)` converts pink `MnO_(4)^(-)` to colourless `Mn^(+2)`
Promotional Banner

Similar Questions

Explore conceptually related problems

In an organic compound , the presence of halogen is detected by

When acetylene is passed through dil. H_(2)SO_(4) in the presence of HgSO_(4) , the compound formed is

Amount of oxalic acid present in a solution can be determined by its titration with KMnO_(4) solution in the presence of H_(2)SO_(4) . The titration gives unsatisfactory result when carried out in the presence of HCl , because HCl :

In the manufacture of H_(2)SO_(4) by contact process, the presence of As_(2)O_(3) acts as :-

Chlorobenzene reacts with trichloro acetaldehyde in the presence of H_(2)SO_(4) The major product formed is :

Assertion: Reaction of SO_(2) and H_(2)S in the presence of Fe_(2)O_(3) catalyst gives elemental sulphur. Reason: SO_(2) is a reducing agent.

Give a test to detect the presence of SO2 gas?

Presence of water can be detected by

Sodium sulphite (Na_(2)SO_(3)) is added to meat as a preservative. The presence of Na_(2)SO_(3) can be detected by adding dil. H_(2)SO_(4) when the pungent smelling gas evolved turns the lime water milky. The gas evolved was detected as sulphur dioxide. The SO_(2) " to "SO_(4)^(2-) in titration. SO_(2)+2H_(2)O+I_(2) to 4H^(+)+SO_(4)^(2-)+2I^(-) In order to check the results of titration, excess barium chloride is added to the final solution. The resulting precipitate is collected and weighed. Q. SO_(2) gas is used as bleaching agent. Its bleaching action is :

Sodium sulphite (Na_(2)SO_(3)) is added to meat as a preservative. The presence of Na_(2)SO_(4) can be detected by adding dil. H_(2)SO_(4) when the pungent smelling gas evolved turns the lime water milky. The gas evolved was detected as sulphur dioxide. The SO_(2) " to "SO_(4)^(2-) in titration. SO_(2)+2H_(2)O+I_(2) to 4H^(+)+SO_(4)^(2-)+2I^(-) In order to check the results of titration, excess barium chloride is added to the final solution. The resulting precipitate is collected and weighed. Q. Which of the following compounds is formed, when Na_(2)SO_(3) is boiled with sulphur.