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Sourav posted an Question
August 30, 2020 • 03:23 am 30 points
  • IIT JAM
  • Chemistry (CY)

Plz solve this

36. AH of water is 285.8 kJ moli, If enthalpy of neutralisation of monoacid strong base is -57.3 kJ mo-H, AH} of OH ion will be (a) -228.5 kJ mol-l (b) 228.5 kJ morl (c) 114.25 kJ mol-l (d) -114.25 kJ mol

2 Answer(s) Answer Now
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    Dinesh khalmaniya 1 best-answer

    option A

    cropped177620932982054169.jpg
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    got it?

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    sir why enthalpy of formation of H+ is 0

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    check it

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    samjh nhi arha

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    okay later I'll explain you on the paper.

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    but heat of formation of H+ value 0 hai.. woh kaise mujhe nhi pata

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    check it

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    Heat of formation of H+(aq) is not zero. But it is arbitrarily assigned so by a convention, ΔH°(H+ aq) = 0. Hope this helps.

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    Priyanshu kumar Best Answer

    option A

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    https://doubtnut.com/question-answer-chemistry/delta-hf0-of-water-is-2858-kj-mol-1-if-enthalpy-of-neutralisation-of-monoacid-strong-base-is-573-kjm-32505339 see this video solution sourav

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    samjh nhi aya sir

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    how to calculate enthalpy of formation of H+

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    okk sourav wait

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    did you get it sir?

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    sourav??

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    yes sir

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    and sourav is your doubt clear or still have doubt in this??

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    still have the doubt

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    sourav directly when you subtract these two you get enthalpy of formation of OH-

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    As standard enthalpy of H2=0 O2=0 and arbitrarily we take H+ also as 0

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    but what about heat of formation of H+

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    We take arbitrarily it as 0

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    cl- Na+ ke liye vhi 0 hoga?

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    nhi mainly H+ ke liye krte hai

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    ok sir.

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