Given... #C(s) +O_2(g) rarr CO_2(g)# #;DeltaH^@=-394*kJ*mol^-1# #(i)# #Pb(s) +1/2O_2(g) rarr PbO(s)# #;DeltaH^@=-217*kJ*mol^-1# #(ii)# #PbO(s) +CO(g) rarr Pb(s)+CO_2(g)# #;DeltaH^@=-66*kJ*mol^-1# #(iii)# How do we find #DeltaH_f^@CO(g)#?
1 Answer
We add the individual equations algebraically to get...
Explanation:
And so we gots three thermochemical equations...
And so take
And to get the
...so your option is pretty clear.....but this is a lot of work for a multiple choice question; I take it is first year chem?