Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Which one of the following arrangements represents the correct order of the proton affinity of the given spices:Option: 1 <img alt="I^{-}< F^{-}l

Which one of the following arrangements represents the correct order of the proton affinity of the given spices:

Option: 1

I^{-}< F^{-}< HS^{-}< NH_{2}^{-}

 

 

 


Option: 2

HS^{-}< NH_{2}^{-}< F^{-}<I^{-}


Option: 3

F< I< NH_{2}< HS


Option: 4

NH_{2}^{-}< HS^{-}< I^{-}< F^{-}


Answers (1)

best_answer

The species with the greatest proton affinity will be the strongest base, and its conjugate acid will be the weakest acid.

More the proton affinity, more difficult to give H+

The weakest acid will have the smallest value of Ka .

Since HI is a stronger acid than HF and HF is a stronger acid than H2S, a partial order of proton affinity is \mathrm{I^{-}<F^{-}<H S^{-}}
Since NH3 is a very weak acid, \mathrm{NH}_2^{-} must be a very strong base.

Therefore the correct order of proton affinity is
\mathrm{I^{-}<F^{-}<H S^{-}<\mathrm{NH}_2^{-}}

Option 1 is correct.
 

Posted by

Pankaj Sanodiya

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

BTech aspirant from north-east or UT? Apply for CSAB NEUT counselling 2025 today
anam-khan

JoSAA round 2 cut-off 2025 out; BTech closing ranks for top engineering courses at IITs
anam-khan

Goa Engineering Admission 2025: 1,415 eligible for BE seats; merit list on June 27

Latest Question