Chemistry - Thermochemistry Question with Solution | TestHub
ChemistryThermochemistryEnthalpy of NeutralisationMedium2 minQB
ChemistryMediumnumerical
The enthalpy of neutralization of a monobasic acid in decinormal solution by a dilute solution of KOH is -10,600 cal. The enthalpy of neutralization of strong acid by strong base is -13,600 cal. Assuming that the acid is 25% dissociated in decinormal solution, the enthalpy of dissociation of the acid (in kcal/mole) is
Answer:
4.00
Solution:
The 75% undissociated fraction absorbs dissociation energy: -13600 + 0.75 ΔHdiss = -10600, so 0.75 ΔHdiss = 3000 cal and ΔHdiss = 4000 cal/mol = 4 kcal/mol. Answer: 4.
Stream:JEESubject:ChemistryTopic:ThermochemistrySubtopic:Enthalpy of Neutralisation
⏱ 2mℹ️ Source: QB
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