Question

For which of the following reactions heat of formation `(Delta_(f)H)` is equal to `DeltaH//2` ?
A. `N_(2)+O_(2)rarr 2NO,DeltaH=X_(1)`
B. `CO+O_(2)rarrCO_(2),DeltaH=X_(2)`
C. `PCl_(3)+Cl_(2) rarr PCl_(5),DeltaH=X_(3)`
D. `C+O_(2) rarrCO_(2),DeltaH=X_(4)`

Answer 1

Correct Answer - A
Two moles of `NO` are formed in the reaction.