Question

Which of the following process best describes atomization of $C{H}_4(g)$?

• A. Exothermic
• B. Endothermic
• C. Non-spontaneous
• D. Spontaneous
• E. Both (B) and (C)

Answer 1

Answer: (E)

The energy required to separate one mole $C{H}_4$ molecule into its gaseous atoms is known as heat of atomisation. In this process, heat is absorbed i.e. (endothermic) and the said reaction is non-spontaneous.