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c2h4 ra c2h4 oh 2
c2h4 oh 2 ra ch3cooh
c2h4 oh 2 ra ch3cho
c2h4 ra c2h5oh ra ch3cooh
c2h4 oh 2 cu oh 2
c2h5oh ra ch2 ch2
c2h4 oh 2 + br2
từ c2h4 ra ch3cooh
c2h4o-2
c2h4+o2
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