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The standard enthalpies of formation of CO2(g), H2O(g) and CO(g) in kJ mol- are -394, ...

The standard enthalpies of formation of CO2(g), H2O(g) and CO(g) in kJ mol- are -394, -242 and -110 respectively. What is the standard enthalpy change for the reaction CO(g) + H2(g)O → CO2(g) + H2(g)?

A. -42 KJ mol-
B. +42 KJ mol-
C. -262 KJ mol-
D. +262 KJ mol-




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