Final answer:
The major product of dehydrated alcohol reacting with sulfuric acid at 180 degrees Celsius is ethylene, while at 140 degrees Celsius and in excess of ethanol, the product is diethyl ether. Therefore, the major product does not include Aldehyde, Ester, or Ethanol. In the context of the given options and provided information about reaction conditions at 180 degrees Celsius, the correct answer would be ethylene (B) Ether.
Step-by-step explanation:
When dehydrated alcohol reacts with sulfuric acid (H₂SO₄), the major product formed can vary depending on the reaction conditions. If we refer to the structural formula of ethanol dehydrating under excess concentrated sulfuric acid at 180 degrees Celsius, the primary reaction is the formation of ethylene (also known as ethene) and a side product of water. This is a dehydration reaction, where water is removed from the ethanol molecule.
However, at lower temperatures around 140 degrees Celsius and with an excess of ethanol, the reaction can yield different products. Under these conditions, diethyl ether is typically formed along with water. This reaction involves the dehydration of two molecules of ethanol.
Therefore, the major product does not include Aldehyde, Ester, or Ethanol. In the context of the given options and provided information about reaction conditions at 180 degrees Celsius, the correct answer would be ethylene (B) Ether.