Law) Determine the heat of formation AH°; (in kJ/m (H2O2) at 25°C from the following thermochemical

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Chapter6: Thermochemisty
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Problem 6.37QP
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5please answer and refer to the periodic table

5. (Hess's Law) Determine the heat of formation AH°; (in kJ/mol) of liquid hydrogen
peroxide (H2O2) at 25°C from the following thermochemical equations.
H2(g) + ½O2(g) → H2O(g)
AH° = -241.82 kJ/mol
2H(g) + O(g) → H2O(g)
AH° = -926.92 kJ/mol
%3D
2H(g) + 20(g) → H¿O2(g)
AH° = -1070.60 kJ/mol
AH° = -498.34 kJ/mol
20(g) → O2(g)
H2O2(1) → H2O2(g)
AH° = 51.46 kJ/mol
Transcribed Image Text:5. (Hess's Law) Determine the heat of formation AH°; (in kJ/mol) of liquid hydrogen peroxide (H2O2) at 25°C from the following thermochemical equations. H2(g) + ½O2(g) → H2O(g) AH° = -241.82 kJ/mol 2H(g) + O(g) → H2O(g) AH° = -926.92 kJ/mol %3D 2H(g) + 20(g) → H¿O2(g) AH° = -1070.60 kJ/mol AH° = -498.34 kJ/mol 20(g) → O2(g) H2O2(1) → H2O2(g) AH° = 51.46 kJ/mol
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