| Given: |
| (i) \[C(graphite)+{{O}_{2}}(g)\to C{{O}_{2}}(g):\Delta r{{H}^{\circ }}=xKJmo{{l}^{-1}}\] |
| (ii) \[C(graphite)+\frac{1}{2}{{O}_{2}}(g)\to CO(g):\Delta rH{}^\circ =ykJmo{{l}^{-1}}\] |
| (iii) \[CO(g)+\frac{1}{2}{{O}_{2}}(g)\to CO(g):\Delta rH{}^\circ =z\,kJ\,mo{{l}^{-}}\] |
| Based on the above thermochemical equations, find out which one of the following algebraic relationships is correct? |
A) \[x=y+z\]
B) \[z=x+y\]
C) \[y=2z-x\]
D) \[x=y-z\]
Correct Answer: A
Solution :
(ii) + (iii) = (ii) y + z =x.
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