Which of the following compound is produced when ethano (C5H5Oh ) is dehyrated

When ethanoic acid (C2H4O2) undergoes dehydration, it typically loses a water molecule (H2O) to form an anhydride or an alkene, depending on the conditions of the reaction. However, it seems there might be a small confusion in your question regarding the chemical formula. Ethanol, which is C2H5OH, is a common alcohol that can also undergo dehydration. Let's clarify both scenarios.

Dehydration of Ethanol

When ethanol (C2H5OH) is dehydrated, it primarily produces ethylene (C2H4). This reaction can be catalyzed by an acid, such as sulfuric acid, and involves the removal of a water molecule. The reaction can be summarized as follows:

• Reactant: C2H5OH (Ethanol)
• Product: C2H4 (Ethylene) + H2O (Water)

Mechanism of Dehydration

The dehydration process involves several steps:

1. Protonation: The hydroxyl group (-OH) of ethanol is protonated by the acid, making it a better leaving group.
2. Formation of a Carbocation: The protonated ethanol loses a water molecule, forming a carbocation intermediate.
3. Elimination of a Proton: A hydrogen atom is removed from a neighboring carbon, leading to the formation of a double bond and resulting in ethylene.

Dehydration of Ethanoic Acid

If we consider ethanoic acid (C2H4O2), the dehydration can lead to the formation of acetic anhydride (C4H6O3) or other products depending on the reaction conditions. The general reaction can be represented as:

• Reactant: C2H4O2 (Ethanoic Acid)
• Product: C4H6O3 (Acetic Anhydride) + H2O (Water)

Understanding the Reaction Conditions

The specific product formed during dehydration can depend on factors such as temperature, pressure, and the presence of catalysts. For instance, higher temperatures may favor the formation of alkenes, while milder conditions might lead to the formation of anhydrides.

In summary, if you are referring to ethanol, the primary product of dehydration is ethylene. If you mean ethanoic acid, acetic anhydride is a likely product. Understanding the context and conditions of the reaction is crucial for predicting the outcome accurately.