Question

The enthalpy change in the reaction $2CO+O_2\to 2{CO}_2$ is termed as:

• A. enthalpy of reaction
• B. enthalpy of fusion
• C. enthalpy of formation
• D. enthalpy of combustion

Answer 1

Answer: (A)

enthalpy of reaction

Since the given reaction,
$2CO+O_2\to 2C{O}_2$
implies that ${\text{2 moles of CO reacts with 1 mole O}}_2{\text{and forms 2 moles of CO}}_2$
Since, (i) enthalpy of formation is the energy change in a reaction forming $1mole$ of any species
(ii) enthapy of combustion is the energy change in a reaction during combustion of$1mole$ of any species.
(iii) enthalpy of fusion is the energy involved in fusion reaction of $1mole$ of any species.
(iii) enthalpy of reaction is the energy change in any reaction.
Hence, answer is option $A$.