Question

Among the following the weakest conjugate base is
(A) OH-
(B) SH-
(C) SeH-
(D) TeH-
​

Answer 1

Answer:

seh is the weakest.

hope it helps

Answer 2

The weakest conjugate base is$TeH-$

• The conjugate base is the species that is formed by the removal of a proton from an acid.
• In the reverse reaction, it can gain the hydrogen ion.
• Acids has the capability of releasing multiple protons.
• The conjugate base of an acid will be itself acidic.

Explanation for Correct answer -

Option (D) $TeH-$  

• TeH- being  has the  weakest conjugate base

• Sixteenth group element tellurium can form strongest acid H2Te

• The strongest acid is the weakest base
• Strongest acid $H2Te$ will dissociate as $H+$and $TeH-$ weakest conjugate base

Explanation for InCorrect answer -

Option  (A) $OH-$ is not the weakest conjugate base as it is rleleased from  H2O

H2O is not an acid.

Option  (B) $SH-$ is not the weakest base as it is released from H2S which is a gas and not and acid.

Option (C) SeH- is not the weakest base as it is released from H2Se which is not an acid,Thus it cannot act as a conjugate base.