English

What is Grignard Reagent? - Chemistry

Advertisements
Advertisements

Question

What is Grignard reagent?

One Word/Term Answer

Solution

Grignard’s reagent is an organometallic compound in which the divalent magnesium is directly linked to an alkyl group acid and a halogen atom. It is represented by general formula R–Mg–X

shaalaa.com
  Is there an error in this question or solution?
2018-2019 (February) Set 1

RELATED QUESTIONS

What happens when \[\ce{CH3 - Br}\] is treated with KCN?


Chlorobenzene is extremely less reactive towards a nucleophilic substitution reaction. Give two reasons for the same.


Write the final product(s) in each of the following reactions:


The presence of nitro group (−NO2) at o/p positions increases the reactivity of haloarenes towards nucleophilic substitution reactions.


How the following conversion can be carried out?

Chlorobenzene to p-nitrophenol


Give reasons:

The dipole moment of chlorobenzene is lower than that of cyclohexyl chloride.


Write the product formed on reaction of D-glucose with Br2 water.


Write chemical equation in support of your answer. 
 Out of   Cl and  CH2- Cl,  which one is more reactive towards nucleophilic substitution reaction and why? 


Assertion: Presence of a nitro group at ortho or para position increases the reactivity of haloarenes towards nucleophilic substitution.

Reason: Nitro group, being an electron-withdrawing group decreases the electron density over the benzene ring.


Which of the following compounds will give racemic mixture on nucleophilic substitution by \[\ce{OH-}\] ion?

(a) \[\begin{array}{cc}
\phantom{}\ce{CH3 - CH - Br}\\
\phantom{}|\\
\phantom{....}\ce{C2H5}\phantom{}
\end{array}\]

 

(b) \[\begin{array}{cc}
\phantom{..}\ce{Br}\\
\phantom{}|\\
\phantom{}\ce{CH3 - C - CH3}\\
\phantom{}|\\
\phantom{....}\ce{C2H5}\phantom{}
\end{array}\]

 

(c) \[\begin{array}{cc}
\phantom{....}\ce{CH3 - CH - CH2Br}\\
\phantom{}|\\
\phantom{....}\ce{C2H5}\phantom{}
\end{array}\]


Arrange the following compounds in increasing order of rate of reaction towards nucleophilic substitution.

(a)
(b)
(c)

Arrange the following compounds in increasing order of rate of reaction towards nucleophilic substitution.

(a)
(b)
(c)

Arrange the following compounds in increasing order of rate of reaction towards nucleophilic substitution.

(a)
(b)
(c)

Arrange the following compounds in increasing order of rate of reaction towards nucleophilic substitution.

(a)
(b)
(c)

Haloarenes are less reactive than haloalkanes and haloalkenes. Explain.


Allyl chloride is hydrolysed more readily than n-propyl chloride. Why?


\[\ce{C6H12O6 ->[(Zymase)] A ->[NaOH][\Delta] B + CHI3}\]

The number of carbon atoms present in the product B is:


Assertion: Chlorobenzene is resistant to nucleophilic substitution reaction at room temperature.

Reason (R): C–Cl bond gets weaker due, to resonance.


Why haloarenes are not reactive towards nucleophilic substitution reaction? Give two reactions.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×