The heat of formation of CO(g)and CO2(g)are ΔH=- 110 and ΔH = -393 kJ.mol−1respectively. What is the heat of reaction (ΔH ) (in kJ.mol−1) for the following reaction CO+12O2→CO2?
A
-504
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B
-142.5
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C
-283
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D
504
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Solution
The correct option is C -283 ΔHf of CO = - 110 KJ mol−1