Enthalpy of combustion of carbon to CO_2 is -393.5 "kJ mol"^(-1). Calculate the heat released upon formation of 35.2 g of CO_(2) from carbon and dioxygen gas.

Enthalpy of combustion of carbon to CO_2 is -393.5 "kJ mol"^(-1). Calc

1.	Enthalpy of combustion of carbon to CO_2 is -393.5 "kJ mol"^(-1). Calculate the heat released upon formation of 35.2 g of CO_(2) from carbon and dioxygen gas.
Answer» Solution :`C_((s)) + O_(2(g)) to CO_(2(g)) DeltaH = -393.5 "KJ mol"` `1 mol=44 gm` HEAT released when 44 gm `CO_(2)` is formed `DeltaH = 393.5 "kJ"` `therefore` When 35.2 gm `CO_2` formed than `= (393.5)/( 44) XX 35.2` `=314.8 "kJ"`