Question

Heat of formation of ethane, ethylene acetylene and carbon dioxide are - 136, - 66, - 228 and - 395 (all in kJ) respectively, most stable among them is ______.

Options

• Carbon dioxide

• Acetylene

• Ethylene

• Ethane

Answer 1

Heat of formation of ethane, ethylene acetylene and carbon dioxide are - 136, - 66, - 228 and - 395 (all in kJ) respectively, most stable among them is carbon dioxide.

Explanation:

The more energy released during the formation (exothermic), the more stable it is. As a result, CO₂ is the most stable of the bunch.