Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

The energy required to break one mole of a bond in a gaseous substance is:
Options
A Bond enthalpy
Correct Answer
B Enthalpy of fusion
C Ionization energy
D Lattice energy
Correct Answer

Option A is the correct answer.

Detailed Explanation

Bond enthalpy (or bond dissociation energy) is the average energy required to break one mole of a specific type of bond in a gaseous molecule, producing gaseous fragments.

Hint

This term is specific to breaking covalent bonds in the gas phase.

Question Info