On the basis of thermochemical equations (i),(ii) and (iii), which of the algebric relationship is correct. C("graphite") + O_(2)(g) to CO_(2)(g), Delta_(r)H = x kJ"mol"^(-1) C("graphite") + 1/2 O_(2)(g) to CO(g), Delta_(r)H = y KJ"mol"^(-1) CO(g) + 1/2O_(2)(g) to CO_(2)(g), Delta_(r)H = z kJ"mol"^(-1)

On the basis of thermochemical equations (i),(ii) and (iii), which of

1.	On the basis of thermochemical equations (i),(ii) and (iii), which of the algebric relationship is correct. C("graphite") + O_(2)(g) to CO_(2)(g), Delta_(r)H = x kJ"mol"^(-1) C("graphite") + 1/2 O_(2)(g) to CO(g), Delta_(r)H = y KJ"mol"^(-1) CO(g) + 1/2O_(2)(g) to CO_(2)(g), Delta_(r)H = z kJ"mol"^(-1)
Answer» z = x + y x = y - z x = y + z y = 2z - x Answer :C