Orgo 2 Grignard Rxn

Identify the techniques used in the work-up and characterization of benzoic acid. - The quick, numeric analysis used to characterize the product and assess the purity - The technique used to separate the pure product from any excess reagent, impurities, and byproducts - The analytical method used to confirm the structure and functional groups of the product

The quick, numeric analysis used to characterize the product and assess the purity = Melting point The technique used to separate the pure product from any excess reagent, impurities, and byproducts = Recrystallization The analytical method used to confirm the structure and functional groups of the product = IR spectroscopy

At the beginning of week 2 in the Grignard procedure, why is 6 M HCl added to the beaker containing the reaction product from week 1?

To convert the benzoate salt into benzoic acid

A Grignard synthesis begins with 6.00 g of bromobenzene and ends with 2.98 g benzoic acid. What is the percent yield of the benzoic acid? Assume all other reagents are in excess.

63.9

How will you determine the amount of carbon dioxide that reacts in the Grignard reaction?

It is not necessary to determine the exact mass since it is in excess.

Which substance would not work as a Grignard reagent?

Methylcalcium bromide

Identify characteristics that describe a Grignard reagent.

Nucleophile Basic

In the experimental procedure, which step is made easier through the application of ultrasonic waves?

Preparation of the Grignard reagent

A Grignard reagent is prepared when an _____ reacts with _____ in the solvent _____

organohalide magnesium ether

Consider the charge distribution of a Grignard reagent. There is a partial _____ charge on Mg−X, where X is a halogen, and a partial _____ charge on the adjacent carbon.

positive negative

Which key feature is formed in a Grignard reaction?

Carbon-carbon bond