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Enthalpy of Formation

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AP Chemistry

Definition

The enthalpy change that occurs when one mole of a compound is formed from its constituent elements in their standard states.

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"Enthalpy of Formation" also found in:

Subjects (8)

Practice Questions (12)

What is the enthalpy of formation of ethene (C2H4) given the following bond energies? C-C = 348 kJ/mol; C=C = 612 kJ/mol; C-H = 413 kJ/mol.
Which of the following statements regarding enthalpy of formation is true?
What is the standard state for enthalpy of formation calculations?
The enthalpy of formation of which of the following is zero?
Which of the following statements regarding enthalpy of formation is true?
What is the enthalpy of formation of water (H2O) given the following bond energies? O=O = 498 kJ/mol; O-H = 463 kJ/mol; H-H = 436 kJ/mol.
What is the standard enthalpy of formation of C6H6(g) given the bond enthalpies: C-C = 347 kJ/mol; C=C = 611 kJ/mol; H-H = 436 kJ/mol; C-H = 413 kJ/mol?
What is the standard enthalpy of formation of CaSO4(s) given the bond enthalpies: Ca-O = 494 kJ/mol; S-O = 523 kJ/mol?
If the bond enthalpy of O-H is 467 kJ/mol and the bond enthalpy of O=O is 495 kJ/mol, what is the enthalpy of formation of water?
Given the bond enthalpies: O=O (495 kJ/mol); H-H (436 kJ/mol); and O-H (467 kJ/mol); what is the enthalpy of formation of water?
Which of the following statements regarding enthalpy of formation is false?
What is the enthalpy of formation of methane (CH4) given the following bond energies? C-C = 348 kJ/mol, C-H = 413 kJ/mol, H-H = 436 kJ/mol.

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