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------------------------------------------------ What are the competing overall reactions that will occur if the Grignard reagent from Lab 3 is allowed to react with air?

When a Grignard reagent reacts with air, it primarily reacts with water vapor and oxygen. These side reactions could decrease the yield of the desired Grignard reaction product.

Explanation:

The competing reactions when a Grignard reagent reacts with air mainly involve the reaction of the Grignard reagent with water vapor and oxygen in the air. Grignard reagents, being extremely reactive due to their carbon-magnesium bond, readily react with the water vapor in the air to form a corresponding hydrocarbon and magnesium hydroxide. Similarly, they can also react with oxygen to give magnesium oxide and alkyl peroxide. These side reactions could lead to a lower yield of the desired product in the Grignard reaction.

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