The standared enthalpies of formation at `298K` for `C C1(g), H_(2)O(g), CO_(2)(g)` and `HC1(g)` are `-106.7, -241.8, -393.7`, and `-92.5kJ mol^(-1)`, respectively. Calculate `DeltaH^(Theta)underset(298K)` for the reaction
`C C1_(4)(g) +2H_(2)O(g) rarr CO_(2)(g) +4HCI_(g)`