Answer part a and b Transcribed Image Text: 4

Answer part a and b Transcribed Image Text: 4. Ethanol can be produced industrially using ethene gas and steam.
The equation for the reaction is:
C2H4(g) + H2O(g) =
С2H5ОН(g)
AH= -49kJmol-1
Although a high pressure and low temperature should produce the
highest yield, this reaction is usually carried out under the compromise
conditions of:
• pressure of 7Mpa
temperature 3000C
phosphoric acid (H3PO4) catalyst
a. Use Le Chatelier’s principle to explain why a high pressure is used to achieve a
high yield in this process.
b. Use Le Chatelier’s principle to justify the use of the compromise temperature
and catalyst in this process.

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