Advertisements
Advertisements
Question
Give reason for the following:
Cotton clothes get burnt with concentrated sulphuric acid.
Advertisements
Solution
Cotton contains cellulose. When cotton is treated with concentrated sulphuric acid it removes water from cotton and carbon is left behind. This way cotton clothes get burnt.
\[\ce{(C6H10O5)n ->[Conc.H2SO4] 5(C)n + 6(H2O)n}\]
APPEARS IN
RELATED QUESTIONS
Why is water not added to concentrated H2SO4 in order to dilute it?
Name the products formed when hot and concentrated sulphuric acid reacts with Sulphur.
Name the products formed when hot and concentrated sulphuric acid reacts with Copper.
The following statement is correct only under certain conditions. Rewrite the statement including the appropriate conditions.
Oxalic acid reacts with sulphuric acid to produce carbon monoxide and carbon dioxide.

- Name the catalyst which helps in the conversion of sulphur dioxide to sulphur trioxide in step C.
- In the contact process for the manufacture of sulphuric acid, sulphur trioxide is not converted to sulphuric acid by reacting it with water. Instead a two-step procedure is used. Write the equations for the two steps involved in D.
- What type of substance will liberate sulphur dioxide from sodium sulphite in step E?
- Write the equation for the reaction by which sulphur dioxide is converted to sodium sulphite in step F.
State one appropriate observation of the following:
Dehydration of concentrated sulphuric acid with sugar crystals.
Dilute hydrochloric acid and dilute sulphuric acid are both colourless solutions. How will the addition of barium chloride solution to each help to distinguish between the two?
State your observation of the following case:
When dilute hydrochloric acid is added to sodium carbonate crystals.
The gas evolved when dilute sulphuric acid reacts with iron sulphide.
The property exhibited by concentrated sulphuric acid when it is used to prepare hydrogen chloride gas from potassium chloride is ______.
