For which one of the following equation is `DeltaH_(reaction)^(@)` equal to `DeltaH_(f)^(@)` for the product ?

Options

A. `2CO(g)+O_(2)(g)to2CO_(2)(g)`
B. `N_(2)(g)+O_(2)(g)toN_(2)O_(3)(g)`
C. `CH_(4)(g)+2Cl_(2)(g)toCH_(2)Cl_(2)(l)+2HCl(g)`
D. `Xe(g)+2F_(2)(g)toXeF_(4)(g)`

Answer

D

Explanation

In choice `(D) XF_(4)` is obtained from elements (`Xe` and `F_(2)`). As such in this case `DeltaH_(react)^(@)=DeltaH_(f)^(@)`