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In the success one book, for the answer to "Assess the potential of ethanol as a fuel etc..", is says:
"The most common source of ethanol is from teh addition of water to ethene. However, ethanol obtained by this method is less efficient than other fuels".
Wtf, "by this method"? Why would the method by which it's obtained affect its heat of combustion? Ethanol is ethanol... It also reads:
"The main advantage of ethanol as a fuel produced this way is that it produces a cleaner burn."
Again, wtf?
Can anyone explain, or is the book just plain wrong?
"The most common source of ethanol is from teh addition of water to ethene. However, ethanol obtained by this method is less efficient than other fuels".
Wtf, "by this method"? Why would the method by which it's obtained affect its heat of combustion? Ethanol is ethanol... It also reads:
"The main advantage of ethanol as a fuel produced this way is that it produces a cleaner burn."
Again, wtf?
Can anyone explain, or is the book just plain wrong?