Which of the following equations correctly represents the standard heat of formation `(Delta H_(f) ^(@))` of methane?

Options

A. `C _(("diamond"))+ 2 H _(2) to CH _(4 (g))`
B. `C _(("graphite")) + 2H _(2(g)) to CH _(4 (l))`
C. `C _(("graphite"))+ 2 H _(2 (g)) to CH _(4 (g))`
D. `C _(("graphite"))+ 4 H to CH _(4 (g))`

Explanation

Ctandard heat of formation of methane is represened by `C _(("graphite")) + 2 H _(2 (g)) to CH _(4 (g)) ` because elements taken in their standard state.