Answer :
Water is avoided in Grignard reagent experiments because it reacts with the Grignard reagent, resulting in the formation of an alkane and rendering the reagent inactive. The water serves as the limiting reagent in this reaction.
Water is avoided in reactions involving Grignard reagents because Grignard reagents react readily with water, leading to the deactivation of the reagent. When a Grignard reagent encounters water, a proton (H+) from the water reacts with the carbon of the Grignard reagent to form an alkane. The equation for the reaction of a Grignard reagent with water is RMgX + H2O
ightarrow RH + Mg(OH)X, where R represents the organic group and X is a halide. In this reaction, the water serves as the limiting reagent, as one equivalent of water will react with one equivalent of the Grignard reagent, which determines the extent of the reaction.
