Question

The energy released on combustion of 1 mole of C)
with gaseous oxygen is
(a) AH combustion
(b) AHºformation of CO2
(c) both are true (d) none is true (OJEE)​

Answer 1

Answer:

Correct Option is ( c )

both are true

Answer 2

The answer is c) both are true

Explanation:

The combustion of 1 mole of carbon can be represented by the following chemical equation:

$C(s) + O_2(g)\rightarrow CO_2(g)$

In this reaction, the carbon atom is heated with an oxygen atom, i.e. a combustion reaction, hence, enthalpy would be termed as enthalpy of combustion, i.e. $\Delta$Hº combustion.

Also, in this reaction, since one mole of carbon dioxide is getting formed from the constituent elements in their stable states of aggregation, hence, the enthalpy associated with the process would be termed as the standard enthalpy of formation, i.e. $\Delta$Hº formation of $CO_2$.