Which of the following statements regarding Grignard reagents are TRUE? a. Grignard reagents tend to act as Bronsted bases. b. Grignard reagents decompose rapidly in anhydrous ether solutions. c. The Grignard reagent is an example of an organometallic compound. d. Once prepared , a Grignard reagent should be used quickly. e. A Grignard reagent contains electrophilic carbon. Tries 0/10

A and C

Explanation :

Grignard reagent are organometallic compound

formed as a result of the reaction between magnesium and an organic halide. They have the general formular RMgX.

Grignard reagent decompose rapidly upon reaction with water, thats why di-ethyl ether or tetrahydrofuran are used instead ,because the oxygen present in this solvent brings stability to magnesium .

It also act as a bronsted base for protic substrate. Grignard reagent are very good nucleophiles that react with electrophiles such as epoxide and carbonyl compounds.

The best options are "C & D"

C: The Grignard reagent is an example of an organometallic compound.

D: Once prepared, a Grignard reagent should be used quickly

Explanation:

Grignard reagent is a highly reactive organomagnesium compound formed by the reaction of a haloalkane with magnesium in an ether solvent.Grignard reagents are useful for forming carbon–heteroatom bonds.

With formula RMgX

X is a halogen and R is an alkyl or aryl.

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o