For the Grignard lab, why was it essential that all the glassware be rigorously

Question

For the Grignard lab, why was it essential that all the glassware be rigorously dried in the oven overnight? Draw out the reaction that would happen instead of the Grignard reaction if the glass hadn?t been dried and explain why it happens. IV. (8 points) You are performing the following Grignard reaction with 2.0 grams of bromobenzene and 1.0 gram of methyl benzoate. Bromobenzene has a molecular weight of 157 and methyl benzoate has a molecular weight of 136. The reaction uses an excess of magnesium metal.

Explanation / Answer

In the presence of water, the molecule of H2O would attack the bromobenzene forming

B-OH... where B is the benzene ring

and HBr... the hydrogen bromide acid.

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