Oxidation of ethene in the presence of ionic catalyst in aqueous medium produces:a)Ethanalb)Methanalc)Hydrogen peroxided)EthyneCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

As 2 OH on same carbon is highly unstable so in end 1 H2O molecule is released forming ethanal

Answer

Because in aqueous medium it produces the OH base. Then OH base react with the ethene next the double bond breaks OH base join to form the Ethanol

Answer

The oxidation of ethene (C2H4) in the presence of an ionic catalyst in an aqueous medium produces ethanal (C2H4O). This reaction is commonly known as the Wacker process and is an important industrial process for the production of ethanal.

Here is a detailed explanation of the reaction:

1. Introduction:
The Wacker process is a catalytic oxidation reaction that converts ethene to ethanal using a palladium-based catalyst in the presence of water and oxygen. The reaction occurs under mild conditions and is widely used in the production of various chemicals.

2. Reaction mechanism:
The reaction proceeds through the following steps:

- Step 1: Activation of the catalyst
The palladium-based catalyst is activated by reacting it with a copper salt, such as copper chloride. This step is essential to enhance the catalytic activity of palladium.

- Step 2: Formation of a π-allyl complex
Ethene coordinates with the palladium catalyst to form a π-allyl complex. This complex is stabilized by the presence of water in the reaction medium.

- Step 3: Oxidation of the π-allyl complex
The π-allyl complex reacts with molecular oxygen (O2) to form a high-valent palladium intermediate. This step involves the transfer of an oxygen atom from O2 to the palladium center.

- Step 4: Hydrolysis of the high-valent palladium intermediate
The high-valent palladium intermediate reacts with water to yield ethanal and regenerate the palladium catalyst. This step involves the transfer of a proton from water to the palladium center and the release of ethanal.

3. Formation of ethanal:
The final product of the reaction is ethanal, which is an aldehyde. This compound is formed by the hydrolysis of the high-valent palladium intermediate. Ethanal is an important chemical used in various industries, including the production of plastics, resins, and solvents.

4. Significance of the reaction:
The Wacker process is a highly efficient and selective method for the oxidation of ethene to ethanal. It offers several advantages, such as mild reaction conditions, high yields, and ease of catalyst regeneration. The process is widely used in the chemical industry for the production of ethanal and its derivatives.

In conclusion, the oxidation of ethene in the presence of an ionic catalyst in an aqueous medium produces ethanal as the main product. The Wacker process is an important industrial process for the production of ethanal and offers several advantages in terms of reaction efficiency and selectivity.

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