[" culate the enthalpy of formation of acetic acid if the enthalpy of combustion to "CO_(2)(g)" and "H_(2)O(l)" is "],[67.0kJmol^(-1)" and enthalpies of formation of "CO_(2)(g)" and "H_(2)O(l)" are respectively "-393.5" and "],[55.9kJ" mol "^(-1)" ."]

Calculate the enthalpy of formation of acetic acid (CH_(3)COOH) if its enthalpy of combustion is 867 kJ mol^(-1) .The enthalpies of fromation of CO_(2)(g) and H_(2)O(l) are -393.5 and -285.9 kJ mol^(-1) respectively.

Calculate the standard enthalpy of formation of propane (C_(3)H_(8)) if its enthalpy of combustion is -2220.2 kJ "mol"^(-1) .The enthalpies of formation of CO_(2)(g) and H_(2)O(l) are -393.5 and -285.8 kJ "mol"^(-1) respectively.

The standard enthalpy of formation of octane (C_(8)H_(18)) is -250kJ //mol . Calculate the enthalpy of combustion of C_(8)H_(18) . The enthalpy of formation of CO_(2)(g) and H_(2)O(l) are -394 kJ//mol and -286kJ//mol respectively.

The standard enthalpy of formation of octane (C_(8)H_(18)) is -250kJ //mol . Calculate the enthalpy of combustion of C_(8)H_(18) . The enthalpy of formation of CO_(2)(g) and H_(2)O(l) are -394 kJ//mol and -286kJ//mol respectively.

If the enthalpy of formation of H_2O(l) is -x kJmol and enthalpy of neutralization of HCl and NaOH is -y kJmol then enthalpy of formation of OH^(-) ion (in kJmol) is

The standard enthalpy of formation of octane (C_(8)H_(18)) is -250kJ //mol . Calculate the enthalpy of combustion of C_(8)H_(18) . The enthalpy of CO_(2)(g) and H_(2)O(l) are -394 kJ//mol and -286kJ//mol respectively.

Use the standard enthalpies of formation and calculation the enthalpy changes accompanying the following reaction: a. CH_(4)(g)+2O_(2)(g) rarr CO_(2)(g)+2H_(2)O(l) Given, enthalpies of formation of CH_(4) ,CO_(2) and H_(2)O are 74.8 kJmol^(-1) ,−393.5 kJmol^(−1) ,−286 kJmol^(−1) respectively.