Question

When a solution of Grignard reagent is added to ____________ a magnesium salt of carboxylic acid is obtained which on acidification gives carboxylic acid.

Options

• ice

• dry ice

• water

• sulphur dioxide

Answer 1

When a solution of Grignard reagent is added to dry ice a magnesium salt of carboxylic acid is obtained which on acidification gives carboxylic acid.

Explanation:

Grignard reagent combines with solid carbon dioxide (dry ice) to produce a carboxylic acid magnesium salt, which when acidified yields the appropriate carboxylic acid.