The enthalpy change for the reaction- g C 2 H 4-3 O 2 g - 2 CO 2 g -2 H 2 O g is called-A- Enthalpy of formationB- Enthalpy of sublimationC- Enthalpy of combustionD- Enthalpy of vaporization

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Standard XII

Chemistry

Heat of Reaction

The enthalpy ...

Question

The enthalpy change for the reaction,
$(g) C_{2} H_{4} + 3 O_{2} (g) ⟶ 2 C O_{2} (g) + 2 H_{2} O (g)$ is called:

Enthalpy of formation

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Enthalpy of combustion

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Enthalpy of vaporization

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Enthalpy of sublimation

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Solution

The correct option is B
Enthalpy of combustion

By definition, Enthalpy of combustion is the amount of heat evolved or absorbed when 1 mole of the substance is completely oxidized.

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Q. The enthalpy change for the reaction,

C_{2} H_{4} (g) + 3 O_{2} (g) ⟶ 2 C O_{2} (g) + 2 H_{2} O (g)

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Q. The enthalpy change for the reaction,

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\frac{1}{2} H_{2} (g) + \frac{1}{2} C l_{2} (g) \to H C l (g)

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The enthalpy change for the reaction, (g)C2H4 + 3O2(g) ⟶2CO2(g) + 2H2O(g) is called:

The correct option is B Enthalpy of combustion By definition, Enthalpy of combustion is the amount of heat evolved or absorbed when 1 mole of the substance is completely oxidized.

The enthalpy change for the reaction,
$(g) C_{2} H_{4} + 3 O_{2} (g) ⟶ 2 C O_{2} (g) + 2 H_{2} O (g)$ is called:

The correct option is B
Enthalpy of combustion

By definition, Enthalpy of combustion is the amount of heat evolved or absorbed when 1 mole of the substance is completely oxidized.