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The equations representing the combustio...

The equations representing the combustion of carbon and carbon monoxide are:
'C(s)+O_2(g) rarr CO_2(g) Delta H=394 kJ / mol'
'CO(s)+1/2 O_2(g) rarr CO_2(g) Delta H=-284.5 kJ / mol'
the heat of formation of 1 mol of 'CO(g)' is

A

'-109.5 kJ / mol'

B

+109.5 kJ / mol'

C

'+180.0 kJ / mol'

D

+100 kJ / mol'

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The correct Answer is:
A
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