Question

B) ch3ch2 – or (ch3)2ch – which is more stable? explain.

Answer 1

Hi friend here is your answer

##################


(CH3)2CH is more stable than CH3CH2.
Because of mesomeric effect.
More negative charge will be given to CH because of 2CH3.


###################

Answer 2

Answer:

CH3CH2--  is more stable than   (CH3)2 CH--

Explanation:

The given species are both Carbanions.                                                                                           (a) is a primary carbanion whereas (b) is a secondary carbanion.                                               In carbanions , if there are more alkyl groups attached to the negative Carbon atom , the +I effect increases. Increased localisation of the –ve charge on a Carbon atom makes the species unstable.                                                                   Hence CH3CH2--  is more stable than   (CH3)2 CH-- .