MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryThermodynamics and ThermochemistryRelationship Between ΔH and ΔU Which one of the following is not always negative?
A.Enthalpy of combustion
B.Enthalpy of formation✓ Correct
C.Enthalpy of neutralization
D.Lattice enthalpy
Explanation
Enthalpy of combustion, lattice enthalpy and enthalpy of neutralization are exothermic, i.e. –ve while enthalpy of formation may be +ve or –ve.
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