Question

Define standard enthalpy of formation and describe a method for its direct determination with the help

Answer 1

Answer:

The enthalpy of formation is the standard reaction enthalpy for the formation of the compound from its elements (atoms or molecules) in their most stable reference states at the chosen temperature (298.15K) and at 1bar pressure.

Explanation:

Answer 2

The standard enthalpy of formation is defined as the process of change in the heat of the formation of a compound when one mole of substance is produced.

Explanation:

• The standard enthalpy of a system is always used to find the amount of heat transmitted or removed from a substance.
• When one mole of substance is formed, the heat formed will be calculated to identify the enthalpy of that particular compound at a particular temperature.

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