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Heat of Formation

Enthalpy chan...

Question

Enthalpy change for the reaction,
$\frac{1}{2} H_{2} (g) + \frac{1}{2} C l_{2} (g) \to H C l (g)$ is called

A

Enthalpy of combustion

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B

Enthalpy of sublimation

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C

Enthalpy of formation

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D

Enthalpy of fusion

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Solution

The correct option is C Enthalpy of formation
The standard enthalpy of formation of a compound is the change of enthalpy during the formation of 1 mole of the substance from its constituent elements with all substances in their standard states.

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Heat of Formation

Standard XII Chemistry

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