For which one of the following equations is `Delta_(r) H^(@)` equal to `Delta_(f) H^(@)` for the products (s)?

Options

A. `2CO(g) + O_(2) (g) rarr 2CO_(2)(g)`
B. `N_(2) (g) + O_(3) (g) rarr N_(2) O_(3) (g)`
C. `CH_(4) (g) + 2Cl_(2) (g) rarr CH_(2) Cl_(2) (1) + 2HCl(g)`
D. `Xe (g) + 2 F_(2) (g) rarr Xe F_(4) (g)`

Answer

D

Explanation

`Delta_(r) H^(@)` is equal to `Delta_(f) H^(@)` if during the reaction, one mole of the compound `(XeF_(4))` is synthersized from its elements `(Xe` and `F_(2))` in their standard states.