Question

What is the action of concentrated ${{\text{H}}_{2}}\text{S}{{\text{O}}_{4}}$ on
A.Zinc
B.Phosphorus
C.Sulphur ?

Answer 1

Hint: Sulphuric acid is considered as a king of chemical because it is used in most chemical processes in industry. In the ancient time it was called the oil of vitriol because that time it is prepared by vitriol. When Sulphur reacts with most metals and non- matels it produces sulphur dioxide gas.

Complete step by step answer:
Zinc: When concentrated Sulphuric acid is reacted with Zn metal is produce sulphur dioxide, water and zinc sulphate
$\text{Zn}+2{{\text{H}}_{2}}\text{ S}{{\text{O}}_{4}}\to \text{ZnS}{{\text{O}}_{4}}+2{{\text{H}}_{2}}\text{O}+\text{S}{{\text{O}}_{2}}$
Phosphorus: When hot sulphuric acid reacts with phosphorus it evolves sulphur dioxide gas, formation phosphoric acid and water takes place.
\[{{\text{P}}_{4}}+10\text{ }{{\text{H}}_{2}}\text{ S}{{\text{O}}_{4}}\left( \text{Cone} \right)\text{ }\to \text{ 4}{{\text{H}}_{3}}\text{ P}{{\text{O}}_{4}}+10\text{ S}{{\text{O}}_{2}}\left( \uparrow \right)+4{{\text{H}}_{2}}\text{O}\]
Sulphur: When sulphur is reacting with the sulphuric acid it produces sulphur dioxide and water.
$\text{S}+2\text{ }{{\text{H}}_{2}}\text{ S}{{\text{O}}_{4}}\text{ }\to \text{ 3 S}{{\text{O}}_{2}}+2\text{ }{{\text{H}}_{2}}\text{O}$

Note:
Uses of Sulphuric acid
1.It is used in manufacturing of fertilizers, other acids like HCL, HNO$_{3}$ etc explosives such as nitroglycerine, gun cotton etc.
2.It is used as manufacturing of important chemicals such as sodium carbonate, alums, metal sulphates, ethers etc.
3.It is used in reflecting petrol.
4.In storage batteries, lather industries, in textile, paper and dyeing industries.