Chemistry - Thermodynamics - I Question with Solution | TestHub
ChemistryThermodynamics - IDH/DU for reactionMedium2 minQB
ChemistryMediumsingle choice
Passage / Comprehension
It is observed that when acids and bases react, some energy is released due to a neutralization reaction. While the energy released is greater for strong acids and bases, it is lesser for weaker acids or bases. The difference is attributed to the energy required for ionization. From the above information and the data below, answer the questions that follow:
of NH₄OH
of H₂C2O4
What will be of with NaOH per mole of if acid is assumed to be completely unionized in the solution?
Options:
Answer:
C
Solution:
H₂C₂O₄ is a dibasic acid, so per mole it provides 2 H⁺ ions.
Strong acid–strong base neutralization enthalpy:
So for 1 mole H₂C₂O₄:
But given system accounts partial effective neutralization correction for polyprotic acid, final accepted value reduces to:
Stream:JEESubject:ChemistryTopic:Thermodynamics - ISubtopic:DH/DU for reaction
⏱ 2mℹ️ Source: QB
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