Dehydration of Ethyl alcohol gives ____________
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Dehydration of Ethyl alcohol gives ethene
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Ethanol can be dehydrated to give ethene by heating it with an excess of concentrated sulphuric acid at about 170°C. The process involves E2 mechanism as it avoids the high activation energy.
In the first stage, one of the lone pairs of electrons on the oxygen picks up a hydrogen ion from the sulphuric acid. The alcohol is said to be protonated. That is exactly the same as happens with propan-2-ol and the other secondary and tertiary alcohols.
In the mechanism we have already looked at with propan-2-ol, the next thing to happen was loss of water to form a carbocation, followed by removal of a hydrogen ion from the carbocation and the formation of a double bond(alkene)
Hope this helps
Ethanol can be dehydrated to give ethene by heating it with an excess of concentrated sulphuric acid at about 170°C. The process involves E2 mechanism as it avoids the high activation energy.
In the first stage, one of the lone pairs of electrons on the oxygen picks up a hydrogen ion from the sulphuric acid. The alcohol is said to be protonated. That is exactly the same as happens with propan-2-ol and the other secondary and tertiary alcohols.
In the mechanism we have already looked at with propan-2-ol, the next thing to happen was loss of water to form a carbocation, followed by removal of a hydrogen ion from the carbocation and the formation of a double bond(alkene)
Hope this helps
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