Which of the following adducts has the minimu | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The heat of dissociation of an adduct $(CH_3)_3N 	o BX_3$ depends on the strength of the Lewis acid $BX_3$. As the number of electron-donating me

Vedclass · Accepted Answer

$(CH_3)_3N 	o B(CH_3)_3$

Vedclass · Answer

(D) The heat of dissociation of an adduct $(CH_3)_3N 	o BX_3$ depends on the strength of the Lewis acid $BX_3$. As the number of electron-donating methyl groups $(-CH_3)$ on the boron atom increases,the Lewis acidity of the boron compound decreases due to the $+I$ effect. The order of Lewis acidity is $BF_3 > B(CH_3)F_2 > B(CH_3)_2F > B(CH_3)_3$. Since $B(CH_3)_3$ is the weakest Lewis acid among the given options,the adduct $(CH_3)_3N 	o B(CH_3)_3$ has the weakest $N-B$ bond and therefore the minimum heat of dissociation.

Which of the following adducts has the minimum heat of dissociation?

Similar Questions

What is the number of dative bonds in a sulfuric acid molecule?

Which of the following molecules contains a coordinate (dative) bond?

The unshared pair of electrons on a cyanide ion can act as

In the reaction $I_2 + I^{-} \rightarrow I_3^-$,the Lewis base is .........

The most stable Lewis acid-base adduct among the following is

Vedclass Test Series

Exam Paper Generator

Online Exam Module