MEDIUMMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryThermodynamics and ThermochemistryRelationship Between ΔH and ΔU
∆H for the reaction, SO g O g SO g ∆H = –98.3 kJ If the enthalpy of formation of SO₃(g) is –395.4 kJ then the enthalpy of formation of SO₂(g) is :
A.–297.1 kJ✓ Correct
B.493.7 kJ
C.–493.7 kJ
D.297.1 kJ
Explanation
f 3 f 2 f 2 1 H H SO H SO H O 2 x But f 2 H O 0 f 2 f 2 98.3 395.4 H SO H SO 297.1 kJ THERMODYNAMICS AND THERMOCHEMISTRY 40
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