ThermochemistryMedium
Question
Based on the following thermochemical equations,
H2O(g) + C(s) → CO(g) + H2(g): ΔH = 131 kJ
CO(g) + ½ O2(g) → CO2(g): ΔH = −282 kJ
H2(g) + ½ O2(g) → H2O(g): ΔH = −242 kJ
C(s) + O2(g) → CO2(g): ΔH = X kJ
The value of ‘X’ will be
Options
A.−393 kJ
B.−655 kJ
C.+393 kJ
D.+655 kJ
Solution
Adding all the given T.C.E.: X = –393
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