The following equations show the oxidation of carbon and carbon monoxide to carbon dioxide.

C (s) + O2 (g) -- CO2 (g) Delta H = - x kJ mol-1

CO (g) + 1/2O2 (g) -- CO2 (g) Delta H = - y kJ mol-1

What is the enthalpy change, in kJ mol-1, for the oxidation of carbon to carbon monoxide?
C (s) + 1/2O2 (g) -- CO (g)

Choice of answers:
A. x + y
B. - x - y
C. y - x
D. x - y

Question

The following equations show the oxidation of carbon and carbon monoxide to carbon dioxide. 

C (s) + O2 (g) --> CO2 (g)     Delta H = - x kJ mol-1

CO (g) + 1/2O2 (g) --> CO2 (g)     Delta H = - y kJ mol-1

What is the enthalpy change, in kJ mol-1, for the oxidation of carbon to carbon monoxide? 
C (s) + 1/2O2 (g) --> CO (g)

Choice of answers: 
A. x + y
B. - x - y
C. y - x
D. x - y

chmvijay · Answer

what do uou think @amsterdam11

anonymous · Answer

I'm  not sure as my textbook isn't very clear on this subject and I always get this sort of q wrong!

anonymous · Answer

Please help,
,

chmvijay · Answer

ok are u sure the question is correct and not mistakes in that question ? plz check once again

anonymous · Answer

I've checked and that is exactly how it is written, does it not make sense?

chmvijay · Answer

wait i got the question is right

anonymous · Answer

Ok do you know how to answer it? It would be great if you could explain it!

chmvijay · Answer

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