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The flow chart summarises an industrial process for the synthesis of ethane-1,2-diol - HSC - SSCE Chemistry - Question 23 - 2020 - Paper 1
Question 23
The flow chart summarises an industrial process for the synthesis of ethane-1,2-diol. Ethene Oxygen Reactor 1 200–300°C ... show full transcript
Worked Solution & Example Answer:The flow chart summarises an industrial process for the synthesis of ethane-1,2-diol - HSC - SSCE Chemistry - Question 23 - 2020 - Paper 1
Step 1
Use of Catalysts in Reactions 1 and 2
Answer
The use of a catalyst in both reactions speeds up the chemical processes, allowing them to occur at a lower temperature. This enhances the overall efficiency of the reaction, leading to reduced energy consumption. Thus, using a catalyst makes the production of ethane-1,2-diol more economical and less environmentally damaging due to lower emissions.
Step 2
Management of Unused Reactant Gases
Answer
In the production process, unused reactant gases are recycled after being separated from the reaction mixture in Separator 1. This reduces waste, making the process more economical as less raw material needs to be purchased, while also minimizing environmental impact.
Step 3
Market Access for the Final Product
Answer
It is crucial for the industrial process to have access to markets for the major product, ethane-1,2-diol. If there are no markets available, the process may not be viable. Practical arrangements, such as road or rail networks for transporting the product to markets, must be in place to ensure economic feasibility.