The enthalpy of combustion of propance `(C_(3)H_(8))` gas in temes of given of geven data is , Bond energy (kJ/mol)
`underset(+x_(1))(.^(epsi)C-H)underset(+x_(2))(.^(epsi)O-O)underset(+x_(3))(.^(epsi)C-O)underset(+x_(4))(.^(epsi)O-H)underset(+x_(5))(.^(epsi)C-C)`
[Resonance energy of `CO_(2)` is -z KJ/mol and `DeltaH_("vaporization")[H_(2)O(l)" is y " KJ//mol]`

Options

A. `8X_(1)+2X_(5)+5X_(2)-6X_(3)-8X_(4)-4Y-3Z`
B. `6X_(1)+X_(5)+5X_(2)-3X_(3)-4X_(4)-4Y-3Z`
C. `8X_(1)+2X_(5)+5X_(2)-6X_(3)-8X_(4)-Y-Z`
D. `8X_(1)+X_(5)+5X_(2)-6X_(3)-8X_(4)-4Y+3Z`

Answer

A

Explanation

`C_(3)H_(8) (g) + 5O_(2) rarr 3CO_(2)(g) + 4H_(2)O(l)`
`Delta_(c)H={:[(8xxB.E. (C-H)), (+2xx B.E. (C-C)),(+5xxB.E.(O=O))]:} - {:[(6xxB.E. (C=O)), (+8xx B.E. (O-H)),(+3xx|R.E.|of(CO_(2))),(+4xxDelta_("vap")H(H_(2)O))]:}`