Explain why
Grignard reagents should be prepared under anhydrous conditions.

Explanation

Grignard reagents are very reactive. These are readily decomposed by compounds containing acidic lıydrogen (protic solvents), even water, as follows:
` underset("Grignard reagent")(RMgX) +H_2 O to underset("Alkane ")(RH) + Mg (OH) X `
Therefore, Grignard reagent is generally prepared in dry ether under anhydrous conditions.