Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • If the bond energies of H-H, Br-Br and H-Br are 433, 192 and 364 kJ respectively, the <img alt="\Del

If the bond energies of H-H, Br-Br and H-Br are 433, 192 and 364 kJ mol^{-1} respectively, the \Delta H\degree for the reaction

H_{2\left ( g \right )}+Br_{2\left ( g \right )}\rightarrow 2HBr\left ( g \right )\, \, is

Option: 1

-261 kJ


Option: 2

+103 kJ


Option: 3

+261 kJ


Option: 4

-103 kJ


Answers (1)

best_answer

H_{2}\left ( g \right )\, +\, Br_{2}\left ( g \right )\, \rightarrow 2HBr

\Delta H^{0}\dot{}\, reaction\, =\, \left ( B.E \right )\, reactant\, -\left ( B.E \right )\, product

                                =\left [ 433+192 \right ]\, -\left [ 2\times 364 \right ]

                                 =-103\, KJ

                    Option (4) is correct answer   

Posted by

jitender.kumar

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

NEET 2026 Result LIVE: Re-exam scores soon at neet.nta.nic.in; cutoffs, passing marks, counselling dates
anam-khan

Re NEET Result 2026 LIVE: NTA releases OMR sheets, recorded responses; result soon
anam-khan

NEET 2026: Parliamentary standing committee to review conduct of medical entrance exam on July 16

Latest Question