Preparation of Sulphur Dioxide & Sulphuric Acid (55x90cm)
Description
The educational chart titled “Preparation of Sulphur Dioxide & Sulphuric Acid” (55x90cm) typically illustrates both the laboratory and industrial methods for preparing these substances, with stepwise reactions and process diagrams suited to classroom use.
Preparation of Sulphur Dioxide
Laboratory Method: Sulphur dioxide is commonly prepared by heating copper with concentrated sulphuric acid or by reacting sodium sulphite with dilute acid such as HCl.
Example reactions:
Cu
+
2
H
2
SO
4
→
CuSO
4
+
2
H
2
O
+
SO
2
Cu+2H
2
SO
4
→CuSO
4
+2H
2
O+SO
2
Na
2
SO
3
+
2
HCl
→
2
NaCl
+
H
2
O
+
SO
2
Na
2
SO
3
+2HCl→2NaCl+H
2
O+SO
2
Industrial Process: Sulphur is burned in air to form sulphur dioxide:
S
+
O
2
→
SO
2
S+O
2
→SO
2
Alternatively, metal sulfide ores are roasted in air:
4
FeS
2
+
11
O
2
→
2
Fe
2
O
3
+
8
SO
2
4FeS
2
+11O
2
→2Fe
2
O
3
+8SO
2
Preparation of Sulphuric Acid (Contact Process)
Step 1: Production of sulphur dioxide (
SO
2
SO
2
) by burning sulphur in air.
Step 2: Catalytic oxidation of sulphur dioxide to sulphur trioxide (
SO
3
SO
3
) using vanadium(V) oxide as catalyst:
2
SO
2
+
O
2
↔
2
SO
3
2SO
2
+O
2
↔2SO
3
Step 3: Absorption of sulphur trioxide into concentrated sulphuric acid to form oleum (
H
2
S
2
O
7
H
2
S
2
O
7
):
H
2
SO
4
+
SO
3
→
H
2
S
2
O
7
H
2
SO
4
+SO
3
→H
2
S
2
O
7
Step 4: Dilution of oleum with water to yield sulphuric acid:
H
2
S
2
O
7
+
H
2
O
→
2
H
2
SO
4
H
2
S
2
O
7
+H
2
O→2H
2
SO
4
Poster Chart Features
Size: 55×90 cm.
Content: Usually includes labeled diagrams, chemical equations, and flowcharts for both laboratory and industrial setups.
Audience: Designed for secondary and higher education chemistry classrooms, durable and often laminated for frequent use.
This chart serves as a comprehensive teaching aid for understanding both the fundamental chemistry and the industrial relevance of sulphur dioxide and sulphuric acid production.
Specifications
| Model No. | N-C054 |
|---|
