AP and TS EAMCET Medical Model Paper 3

Question : 137 of 160

Marks: +1, -0

If enthalpies of formation for C2H4 (g), CO2 (g) and H2O A at 25°C and 1 atm pressure are 52, - 394 and - 286 KJ/mol respectively, then enthalpy of combustion of C2H4 (g) will be 25°C