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CHM 101 Thermochemistry II Objective Question
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Question

What is the standard enthalpy of formation, ΔH_f°?
Options
A The enthalpy change when a compound decomposes
B The enthalpy change when one mole of a compound is formed from its elements in their standard states
Correct Answer
C The enthalpy of vaporization
D The enthalpy of combustion
Correct Answer

Option B is the correct answer.

Detailed Explanation

The enthalpy of formation, ΔH_f°, refers to the change in enthalpy when one mole of a compound is formed from its elements in their standard states (reference state) at 298 K and 1 atm.

Hint

The notes define enthalpy of formation.

Question Info

Course: CHM 101
Topic: Thermochemistry II
Type: Objective
Difficulty: Not specified
Question 818 of 1872
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