At which temperature and pressure ethene is polymerized to polyethylene and polyurethane?
Correct answer: C. 400°C and 100 atm
- A. 200°C and 100 atm
- B. 500°C and 200 atm
- C. 400°C and 100 atm
- D. 400°C and 200 atm
Explanation
Option C provides the most suitable conditions for the polymerization of ethene to polyethylene: Temperature of 400°C: This temperature is within the range commonly used for the industrial production of polyethylene. It is high enough to provide the energy needed for the reaction to occur but not excessively high to cause unwanted side reactions or degradation. Pressure of 100 atm: The pressure helps to keep the reactants in the gaseous state, which aids in achieving a higher yield of the desired polymer product. A pressure of 100 atm is reasonable for this purpose.
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About Chemistry of Hydrocarbons
Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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