The standard enthalpy of formation of ethyne is to be calculated. Concept introduction: The energy change for the formation of one mole of a compound in its standard state that is 1 atm pressure and 298.15 K temperature is known as the standard enthalpy of the reaction. This is also known as heat of reaction and denoted by the symbol Δ H reaction ° . It is also defined as the enthalpy change during the transformation of matter in a specific chemical reaction . In case of formation the enthalpy change is denote by the symbol Δ H f ° . In case of combustion reaction the enthalpy change is denote by the symbol Δ H combustion ° . In such type of reactions all the reactants and the products should be in their standard state. The standard enthalpy of the reactions follows the same balancing conditions as followed by the desired reaction. The combustion is the process in which a reactant is reacted with the sufficient supply of oxygen gas. To determine: The standard enthalpy of formation of ethyne.

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Chapter 5, Problem 5.104AP

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Interpretation: The standard enthalpy of formation of ethyne is to be calculated.

Concept introduction: The energy change for the formation of one mole of a compound in its standard state that is 1 atm pressure and 298.15 K temperature is known as the standard enthalpy of the reaction. This is also known as heat of reaction and denoted by the symbol ΔHreaction° . It is also defined as the enthalpy change during the transformation of matter in a specific chemical reaction. In case of formation the enthalpy change is denote by the symbol ΔHf° . In case of combustion reaction the enthalpy change is denote by the symbol ΔHcombustion° . In such type of reactions all the reactants and the products should be in their standard state. The standard enthalpy of the reactions follows the same balancing conditions as followed by the desired reaction. The combustion is the process in which a reactant is reacted with the sufficient supply of oxygen gas.

To determine: The standard enthalpy of formation of ethyne.

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