Question

How much energy, in units of kj/mol, is released by the formation of all the bonds in carbon dioxide (CO2)?

Option 1: -393.5 kj/mol
Option 2: -245.8 kj/mol
Option 3: -578.2 kj/mol
Option 4: -112.6 kj/mol

Answer 1

The energy released by the formation of all the bonds in CO2 is -393.5 kJ/mol, according to the standard enthalpy of formation. This matches with Option 1.

Step-by-step explanation:

The question asks for the amount of energy released by the formation of all the bonds in carbon dioxide (CO2). According to the standard enthalpy of formation, the energy released during the formation of one mole of CO2 gas is -393.5 kJ/mol. This value represents the enthalpy change for the exothermic reaction where carbon reacts with oxygen to form CO2. It is important to use consistent data, such as those found in standard tables like Table T1, which provide established thermodynamic quantities. In this case, the table indicates a value of -393.5 kJ/mol for the standard enthalpy of formation of CO2, which matches Option 1 as the correct answer.