Preparation of Oxygen & Liquification of Air (55x90cm)
Description
The “Preparation of Oxygen & Liquification of Air” (55x90 cm) educational chart visually explains both the laboratory and industrial methods for producing oxygen gas, with special focus on the fractional distillation of liquefied air, making it an essential teaching aid for chemistry classrooms.
Chart Features
Laminated, multicolor chart in 55x90 cm size, designed for clear visibility and durability in science classrooms.
Illustrates two core processes:
Preparation of Oxygen
Laboratory Preparation: Typically shows the decomposition of hydrogen peroxide (
H
2
O
2
H
2
O
2
) with manganese dioxide (MnO₂) as a catalyst, or heating potassium chlorate (
K
C
l
O
3
KClO
3
) with MnO₂. The generated oxygen is collected over water.
Example equation:
2
H
2
O
2
(
a
q
)
→
M
n
O
2
2
H
2
O
(
l
)
+
O
2
(
g
)
2H
2
O
2
(aq)
MnO
2
2H
2
O(l)+O
2
(g)
Industrial Preparation: Depicts electrolysis of water and, more commonly, air liquefaction and fractional distillation.
Liquification of Air & Fractional Distillation
Liquification: Air is filtered/compressed, cooled to about
−
200
∘
C
−200
∘
C, and condensed into liquid form. CO₂ and water are removed prior to this step.
Fractional Distillation: Shows the separation of liquid air in a fractionating column:
Nitrogen (
−
196
∘
C
−196
∘
C) boils off first, followed by argon, with oxygen (
−
183
∘
C
−183
∘
C) remaining as a liquid at the bottom and collected.
Emphasizes the progressive separation of gases based on boiling points.
Educational Value
Uses clear diagrams to outline apparatus, process flow, and key temperatures involved in both laboratory and industrial setups.
Supports curricula in chemical processes, industrial chemistry, and states of matter, highlighting practical and real-world applications of air separation technology and gas purification.
Provides concise, stepwise descriptions of preparation, purification, and collection steps for teaching and demonstration purposes.
This poster is indispensable for teaching and revision of oxygen production and air separation techniques, reinforcing both theoretical and practical aspects of chemistry.
Specifications
| Model No. | N-C068 |
|---|
