Chemistry - Thermochemistry Question with Solution | TestHub
ChemistryThermochemistryEnthalpy of FormationEasy2 minQB
ChemistryEasysingle choice
A quantity that cannot be directly measured is
Options:
Answer:
B
Solution:
The reaction C(s) + 2H2(g) tarrow CH4(g) cannot be carried out directly and quantitatively in a calorimeter. Therefore, the standard enthalpy of formation (Δf H) of CH4(g) is determined indirectly from combustion data. The other reactions' enthalpies can be measured directly. This corresponds to option (b).
Stream:JEESubject:ChemistryTopic:ThermochemistrySubtopic:Enthalpy of Formation
⏱ 2mℹ️ Source: QB
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