(a)
Interpretation:
The enthalpy of combustion of ethanol needs to be calculated under the given conditions.
Concept Introduction:
Combustion is a thermochemical reaction in which a substance burns in the presence of excess oxygen to produce carbon dioxide and water.Combustion reactions are exothermic in nature i.e. it is accompanied by the release of energy.
(b)
Interpretation:
The enthalpy of formation of ethanol needs to be calculated under the given conditions.
Concept Introduction:
A thermochemical equation is a balanced stoichiometric equation which depicts the change in the reaction enthalpy i.e. the magnitude and sign of ΔH is added to the right of the equation. The standard enthalpy changefor a reaction ΔH0 is given in terms of the difference in the standard enthalpy of formation of the products and that of reactants.
i.e. ΔH0 = ∑npΔH0f(products) - ∑nrΔH0f(reactants) ------(1)
Here, np and nr are the number of moles of the products and reactants
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Thermodynamics, Statistical Thermodynamics, & Kinetics
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