Description
The “Chlorine & Manufacture of Hydrochloric Acid (55x90cm)” chart is a large educational poster that illustrates the properties, preparation, industrial production, and chemical reactions involved in generating chlorine and manufacturing hydrochloric acid. It is designed for chemistry classrooms, laboratory instruction, and exam preparation.
Key Features
Chlorine Production:
Shows diagrams of the electrolytic process for producing chlorine gas from brine (sodium chloride solution) by passing an electric current through it.
Outlines the chemical equation:
2
NaCl
+
2
H
2
O
→
2
NaOH
+
Cl
2
+
H
2
2NaCl+2H
2
O→2NaOH+Cl
2
+H
2
Highlights the collection and purification of chlorine gas for use in industry.
Manufacture of Hydrochloric Acid:
Diagrams or flowcharts show the direct combination of chlorine and hydrogen gases to form hydrogen chloride gas in a combustion chamber:
H
2
+
Cl
2
→
2
HCl
H
2
+Cl
2
→2HCl
The hot HCl gas is cooled and then absorbed in water in an absorption tower to make hydrochloric acid.
The process emphasizes safety features (combustion control, cooling, and emergency venting), and notes the exothermic nature of the reaction.
Includes key apparatus (combustion chamber, coolers, absorbers, and storage tanks), system temperatures, and reaction conditions for optimal yield.
Properties & Uses:
The chart generally lists physical and chemical properties of chlorine and hydrochloric acid (HCl), including color, odor, reactivity, and common uses such as water disinfection, bleaching, and pH regulation in water treatment, cleaning, and chemical synthesis.
Educational Use
At 55x90cm, the chart is suitable for clear wall display during lessons in high school or undergraduate chemistry labs.
Includes labeled diagrams, flow charts, and concise explanatory notes, often in both English and Hindi.
Helps students visualize industrial chemical manufacture and safely interpret large-scale process equipment.