Grade-XI
Chemistry
, Sulphur
Allotropes of sulphur:
The different allotropes of sulphur are as follows.
Crystalline allotropes
A. Rhombic sulphur (α-sulphur) [Most stable]
B. Monoclinic sulphur (β-sulphur)
Amorphous allotropes
A. Plastic sulphur (γ-sulphur)
B. Colloidal sulphur (δ-sulphur)
C. Milk of sulphur
Above 96ºC, the α-sulphur changes to β-sulphur. This temperature is called transi
temperature.
2
, Sulphur
Uses of Sulphur
Sulphur is used to produce sulphuric acid.
Sulphur is used to prepare gun powder.
Sulphur is the most important constituent of sulfa-drug.
Sulphur is used in the vulcanization of rubber. Vulcanization is the proc
incorporation of sulphur into the rubber.
Sulphur is used to prepare lime sulphur spray. It is prepared by heating lim
sulphur. The lime sulphur spray is used as insecticide.
Sulphur is used to prepare fertilizers. One of the common sulphur containing f
is the calcium sulphate.
Sulphur is used to prepare organosulphur compounds which are u
pharmaceuticals, dyestuffs, and agrochemicals.
3
, Sulphur
Hydrogen sulphide (H2S)
It is also known as sulphuretted hydrogen or hydrosulphuric acid.
It can be easily detected by its rotten egg smell.
Preparation of H2S from Kipp's apparatus
Kipp’s apparatus consists of three chambers. The upper chamber (A) con
a long tube reaches to the chamber (C). The middle and the lower two chambers
C) are connected with a narrow neck such that the liquid can pass through it but
solid iron sulphide. Acid is run down from the opening of chamber (A) and iron su
are kept in chamber (B), which is fitted with tap key for the delivery of H2S gas.
Some pieces of iron(II) sulphides are taken in chamber (B) and dilute su
acid is allowed to run from chamber (A) to chamber (C) such that the level of acid
up to chamber (B) through the neck region. When the dilute acid comes into cont
iron sulphide, H2S gas is formed. When H2S gas is not in use, the tap key clo
tube and H2S gas is collected within the chamber (B).
4
Chemistry
, Sulphur
Allotropes of sulphur:
The different allotropes of sulphur are as follows.
Crystalline allotropes
A. Rhombic sulphur (α-sulphur) [Most stable]
B. Monoclinic sulphur (β-sulphur)
Amorphous allotropes
A. Plastic sulphur (γ-sulphur)
B. Colloidal sulphur (δ-sulphur)
C. Milk of sulphur
Above 96ºC, the α-sulphur changes to β-sulphur. This temperature is called transi
temperature.
2
, Sulphur
Uses of Sulphur
Sulphur is used to produce sulphuric acid.
Sulphur is used to prepare gun powder.
Sulphur is the most important constituent of sulfa-drug.
Sulphur is used in the vulcanization of rubber. Vulcanization is the proc
incorporation of sulphur into the rubber.
Sulphur is used to prepare lime sulphur spray. It is prepared by heating lim
sulphur. The lime sulphur spray is used as insecticide.
Sulphur is used to prepare fertilizers. One of the common sulphur containing f
is the calcium sulphate.
Sulphur is used to prepare organosulphur compounds which are u
pharmaceuticals, dyestuffs, and agrochemicals.
3
, Sulphur
Hydrogen sulphide (H2S)
It is also known as sulphuretted hydrogen or hydrosulphuric acid.
It can be easily detected by its rotten egg smell.
Preparation of H2S from Kipp's apparatus
Kipp’s apparatus consists of three chambers. The upper chamber (A) con
a long tube reaches to the chamber (C). The middle and the lower two chambers
C) are connected with a narrow neck such that the liquid can pass through it but
solid iron sulphide. Acid is run down from the opening of chamber (A) and iron su
are kept in chamber (B), which is fitted with tap key for the delivery of H2S gas.
Some pieces of iron(II) sulphides are taken in chamber (B) and dilute su
acid is allowed to run from chamber (A) to chamber (C) such that the level of acid
up to chamber (B) through the neck region. When the dilute acid comes into cont
iron sulphide, H2S gas is formed. When H2S gas is not in use, the tap key clo
tube and H2S gas is collected within the chamber (B).
4
