Answer :
The correct option is d) Grignard reagents are strong bases and react violently with water.
Grignard reagents are highly reactive organometallic compounds that are used in organic chemistry for the formation of carbon-carbon bonds. They are prepared by the reaction of an alkyl or aryl halide with magnesium in the presence of anhydrous ether.
While working with Grignard reagents, it is important to keep in mind that they are strong bases and react violently with water, producing flammable hydrogen gas. Therefore, they should be handled with care and stored in a dry and inert atmosphere.
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Final answer:
Grignard reagents are strong bases that react violently with water, making humidity detrimental to the reaction. Knowledge of chemical properties is essential to safely handle these reagents, and they must be kept away from protic solvents like methanol. So the correct option is c.
Explanation:
When performing a Grignard reaction or handling a Grignard reagent, it is essential to keep in mind that Grignard reagents will react violently with water as they are strong bases. Therefore, option c) 'Any humidity will spoil the reaction' is correct. Grignard reagents must also not come into contact with protic solvents, such as methanol; hence option b) 'Grignard reagents dissolve well in methanol' is incorrect because methanol contains hydroxyl groups which would react with the Grignard reagent. High temperatures are generally not favorable so option a) is also incorrect.
Knowledge of the properties and reactivity of chemical compounds is critical in this context. For example, Mg(OH)2 is a strong base, as noted in our references, and methanol is neither an acid nor a base in an aqueous solution. The reactivity of Grignard reagents with water and their incompatibility with alcohol solvents like methanol are key considerations while handling them in a laboratory environment.
