हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Explain why Grignard reagents should be prepared under anhydrous conditions?

Advertisements
Advertisements

प्रश्न

Explain why Grignard reagents should be prepared under anhydrous conditions?

स्पष्ट कीजिए
Advertisements

उत्तर

Grignard reagents are very reactive. In the presence of moisture, they react to give alkanes.

\[\ce{\underset{reagent}{\underset{Grigrard}{\overset{\delta-}{R} \overset{\delta +}{M}g \overset{\delta -}{X}}} + H2O -> \underset{Alkane}{R - H} + Mg (OH) X}\]

Therefore, Grignard reagents should be prepared under anhydrous conditions.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 6: Haloalkanes and Haloarenes - Exercises [पृष्ठ १९०]

APPEARS IN

एनसीईआरटी Chemistry Part 1 and 2 [English] Class 12
अध्याय 6 Haloalkanes and Haloarenes
Exercises | Q 6.12 (iii) | पृष्ठ १९०
नूतन Chemistry [English] Class 12 ISC
अध्याय 6 Haloalkanes and Haloarenes
LONG ANSWER TYPE QUESTIONS | Q 18. (vii) | पृष्ठ ६१५

संबंधित प्रश्न

How will you bring about the following conversion?

1-Chlorobutane to n-octane


What happens when bromobenzene is treated with Mg in the presence of dry ether?


How the following conversion can be carried out?

2-Chlorobutane to 3, 4-dimethylhexane


How the following conversion can be carried out?

Chloroethane to butane


In the preparation of chlorobenzene from aniline, the most suitable reagent is:


Which of the following alkyl halides is used as a methylating agent?


Which one of the following produces acyl halide by treatment with PCl5?


Which of the following statements are correct about the reaction intermediate?

(i) Intermediate (c) is unstable because in this carbon is attached to 5 atoms.

(ii) Intermediate (c) is unstable because carbon atom is sp2 hybridised.

(iii) Intermediate (c) is stable because carbon atom is sp2 hybridised.

(iv) Intermediate (c) is less stable than the reactant (b).


Why is it necessary to avoid even traces of moisture during the use of a Grignard reagent?


Identify the following named reaction:

\[\ce{C2H5Br ->[Na/Dry ether] C2H5 - C2H5}\]


\[\ce{R - CH2 - CCl2 - R ->[Peagent] R - C ≅ C - R}\]. The reagent is:-


Grignard reagent shows addition on


Explain why Grignard reagents should be prepared under anhydrous conditions?


Explain why Grignard reagents should be prepared under anhydrous conditions?


Explain why Grignard reagents should be prepared under anhydrous conditions?


Explain why Grignard reagents should be prepared under anhydrous conditions?


Explain why Grignard reagents should be prepared under anhydrous conditions?


Explain why Grignard reagents should be prepared under anhydrous conditions? 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×