profile-img
Sourav posted an Question
September 03, 2020 • 16:56 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Plz solve this

1 Answer(s) Answer Now
  • 0 Likes
  • 2 Comments
  • 0 Shares
  • comment-profile-img>
    Priyanshu kumar best-answer

    https://youtu.be/RxUMX8bnvvw check this video solution sourav

    eduncle-logo-app

    option a,b, and c are correct

    eduncle-logo-app

    Did you check this Sourav??

    eduncle-logo-app

    samjh nahi aya

    eduncle-logo-app

    value to given hai....

    eduncle-logo-app

    https://doubtnut.com/question-answer-chemistry/from-the-following-data-mark-the-options-where-deltah-is-correctly-written-for-the-given-reaction-gi-19379158 check this

    eduncle-logo-app

    now got it or any doubt??

    eduncle-logo-app

    not opening

    eduncle-logo-app

    im not able to comment also

    eduncle-logo-app

    app problem may be....check it later and if any doubt comes then please ask

    eduncle-logo-app

    video hi nahi arha

    eduncle-logo-app

    okk wait

    eduncle-logo-app

    https://youtu.be/dMr3lvTFba8 check

    eduncle-logo-app

    sir lekin samjh mai nahi arha kuch vhi video se 🙁

    eduncle-logo-app

    which part you have problem ..??

    eduncle-logo-app

    change in enthalpy nikal lo hr case me value given hi hai

    eduncle-logo-app

    option a mai kya kara samjh mai nahi arha

    eduncle-logo-app

    HA and BOH ka value diya hai ionisation ka...last line me...or H20 ka diya hai first me...neutralisation reaction..

    eduncle-logo-app

    maine aise kara tha.. but enthalpy of formation of BA, BOH, HA kaise solve krna hai nahi aya muhe

    eduncle-logo-app

    sourav for 1st equation only two value is given to you...first is formation of H20 and second is ionisation of HA...

    eduncle-logo-app

    wait let me confrm is there any concept missing

    eduncle-logo-app

    ok

    eduncle-logo-app

    sourav forward reaction to neutralisation reaction hai...to uska value formation of water se diya hua hai...or fr reactant side ionisation if HA ka value diya hua hai or BOH given hai strong base to uska enthalpy almost constant hoga...so Value aa jayenge -57.3+15=-42.3...and next 3 options samajh gye??

    eduncle-logo-app

    enthalpy of formation of H2O is enthalpy of neutralisation?

    eduncle-logo-app

    what about enthalpy of formation of BA in product side?

    eduncle-logo-app

    sourav clearly it is not mentioned here..just given boh is strong base and ha ionises...but when both are strong then the heat of neutralisation is nothing but it is heat of formation of water

    eduncle-logo-app

    so by considering this you can proceed...as here forward reaction show neutralisation

    eduncle-logo-app

    one more qs why are we adding the enthalpy it should be product - reactant na?

    eduncle-logo-app

    sourav it is not added...it is -57.3-(-15).. as HA ionises...the enthalpy is given as -15 ...see the third equation of this type there HA gaseous ionises

    eduncle-logo-app

    but in qs it us given enthalpy of ionization is +15..why take negative?

    eduncle-logo-app

    in first option enthalpy of formation of BA and BOH are taken as 0..why?

whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers