Question Detail

CHM 101 Thermochemistry II Objective Question
Take CBT

Question

What is bond enthalpy?
Options
A Energy released when bonds are formed
B Energy required to break one mole of a particular type of bond in a gaseous molecule to form gaseous atoms, under standard conditions
Correct Answer
C The total energy of a molecule
D The heat of reaction
Correct Answer

Option B is the correct answer.

Detailed Explanation

Bond enthalpy (D or BDE) is the energy required to break one mole of a particular type of bond in a gaseous molecule to form gaseous atoms, under standard conditions (298 K, 1 atm). It is always positive because breaking bonds requires energy.

Hint

The notes define bond enthalpy.

Question Info

Course: CHM 101
Topic: Thermochemistry II
Type: Objective
Difficulty: Not specified
Question 821 of 1872
Previous Course Details Next