Chemistry - Thermochemistry Question with Solution | TestHub
ChemistryThermochemistryEnthalpy of NeutralisationEasy2 minQB
ChemistryEasystatement
Statement 1: If 10 ml of an acid solution is completely neutralized by adding 10 ml of a base solution, the temperature rises by y°C. If 40 ml of the same acid is completely neutralized by adding 40 ml of the same base, the temperature rises by 4y°C.
Statement 2: The heat liberated in the second case is four times the heat liberated in the first case.
Options:
Answer:
D
Solution:
Quadrupling both volumes quadruples the moles neutralized, so the heat released is indeed 4q (Statement 2 correct). But the mass of solution being heated is also four times larger, so ΔT = 4q/(4m · c) = y°C again, not 4y°C; Statement 1 is incorrect. Ans: (d).
Stream:JEESubject:ChemistryTopic:ThermochemistrySubtopic:Enthalpy of Neutralisation
⏱ 2mℹ️ Source: QB
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