Given that `:` `2CO_((g))+O_(2(g))rarr2CO_(2(g)),DeltaH^(@)=-P kJ` `C_((s))+O_(2(g))rarr CO_(2(g)), DeltaH^(@)=-Q kJ` the enthalpy of formation of carbon monoxide is `:`A. `(P-Q)/(2)`B. `2Q-P`C. `P-2Q`D. `(P-2Q)/(2)`

Given that `:` `2CO_((g))+O_(2(g))rarr2CO_(2(g)),DeltaH^(@)=-P kJ` `C_

1.	Given that `:` `2CO_((g))+O_(2(g))rarr2CO_(2(g)),DeltaH^(@)=-P kJ` `C_((s))+O_(2(g))rarr CO_(2(g)), DeltaH^(@)=-Q kJ` the enthalpy of formation of carbon monoxide is `:`A. `(P-Q)/(2)`B. `2Q-P`C. `P-2Q`D. `(P-2Q)/(2)`
Answer» Correct Answer - D `2CO_((g))+O_(2(g))rarr2CO_(2(g)),DeltaH_(1)=-PkJ` `C_((s))+O_(2(g))rarr CO_(2(g)),DeltaH_(2)=-QkJ` `C_((s))+``^(1/2)O_(2(g))rarrCO_((g)),DeltaH_(3)=?` `DeltaH_(3)=DeltaH_(2)-1//2DeltaH_(1)` `=-Q-(-(P)/(2))=-Q+(P)/(2)` `=(P-2Q)/(2)`

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Given that `:` `2CO_((g))+O_(2(g))rarr2CO_(2(g)),DeltaH^(@)=-P kJ` `C_((s))+O_(2(g))rarr CO_(2(g)), DeltaH^(@)=-Q kJ` the enthalpy of formation of carbon monoxide is `:`A. `(P-Q)/(2)`B. `2Q-P`C. `P-2Q`D. `(P-2Q)/(2)`

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