Dehydration is the kind of reaction that involves the loss of a water molecule from the substrate.
The term dehydration is the kind of reaction that involves the loss of a water molecule from the substrate. in this case the substrate that participates in the reaction is ethanol.
In the formation of ethene(ethylene) as shown, the atoms that are eliminated are hydrogen and oxygen. Thus the elimination of water from ethanol is how we form ethene.
On the other hand, the removal of hydrogen and oxygen from ethanol gives ethanal. In the case of the formation of ethanal, the reaction occurs under oxidizing conditions.
Learn more about dehydration reaction:https://brainly.com/question/13448613
#SPJ1