Which is a good fuel CH_(4) or C_(2)H_(6) ? Thestandard enthalpy of formation ofCH_(4),C_(2)H_(6),CO_(2) and H_(2)O are -74.8, -84.6, -393.5 and -286kJ mol^(-1) respectively .

Which is a good fuel CH_(4) or C_(2)H_(6) ? Thestandard enthalpy of fo

1.	Which is a good fuel CH_(4) or C_(2)H_(6) ? Thestandard enthalpy of formation ofCH_(4),C_(2)H_(6),CO_(2) and H_(2)O are -74.8, -84.6, -393.5 and -286kJ mol^(-1) respectively .
Answer» Solution :Calculate `Delta H ` for `CH_(4) + 2O_(2) RARR CO_(2)+ 2H_(2)O` and `C_(2)H_(6) + ( 7)/( 2) O_(2) rarr 2CO_(2) + 3H_(2)O`. Then calculate `Delta H` PER gram