For the complete combustion of ethanol, C_(2)H_(5)OH(l)+3O_(2)(g)rarr 2CO_(2)(g)+3H_(2)O(l) the amount of heatproduced, as measured in bomb calorimeter,is1364.47 kJ mol^(-1) at25^(@)C. Assuming idealty the enthalpy of combustion , Delta_(c) H, for the reaction will be ( R = 8.314JK^(-1) mol^(-1))

For the complete combustion of ethanol, C_(2)H_(5)OH(l)+3O_(2)(g)rarr

1.	For the complete combustion of ethanol, C_(2)H_(5)OH(l)+3O_(2)(g)rarr 2CO_(2)(g)+3H_(2)O(l) the amount of heatproduced, as measured in bomb calorimeter,is1364.47 kJ mol^(-1) at25^(@)C. Assuming idealty the enthalpy of combustion , Delta_(c) H, for the reaction will be ( R = 8.314JK^(-1) mol^(-1))
Answer» `-1350.50 kJ MOL^(-1)` `- 1366.95kJ mol^(-1)` `-1361.95kJ mol^(-1)` `-1460 .50 kJ mol^(-1)` Solution :Given `DeltaU = - 1364.47 kJ mol^(-1)` `Deltan_(g) = ( n_(p) -n_(r))_("GASEOUS") = 2-3= -1` `T = 25+273= 198 K` `DeltaH = DeltaU + Deltan_(g) RT` `= - 1364.47kJ + ( -1)` `( 8.314 XX 10^(-3) kJ K^(-1) mol^(-1))( 298K)` `= - 1364 .47 - 1 xx 8.314 xx 10^(-3) xx 298K` `= - 1364.47 -2477.57 xx 10^(-3)` `= - 1364.47 - 2.477 = - 1366.95kJ mol^(-1)`