Answered Essay: Enthalpy CHsOH (1) -393.5 k 그 1273.3 k CO2 (g) CSH1206 (s a) Rearrange and combine the

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Enthalpy CHsOH (1) -393.5 k 그 1273.3 k CO2 (g) CSH1206 (s a) Rearrange and combine the 솨 equations given above in order to determine the 솨1° for the overall fermentation reaction. This is the same method you have been using for other Hesss Law problems. kl/mol b) As you worked with Hesss Law in part a, you had to reverse reactions (changing the sign oAHP) and multiply through some reactions by a constant (multiplying the ΔHo value by the same constant) in order to get the correct overall stoichiometry. Given a table of AH values, you can do the same calculation using the following formula: AHorxn [Žn AHf° for products] [En-AH for reactants] Notice that multiplying each Δ.fo value times n (the number of moles in the balanced equation) and subtracting products minus reactants (changes the sign of values on the reactant side just like reversing the reaction) results in exactly the same manipulations you did using Hesss Law Use the Δ+4° formula Just given to calculate the AHo for the alcohol fermentation reaction. Aro k)

Enthalpy CHsOH (1) -393.5 k 그 1273.3 k CO2 (g) CSH1206 (s a) Rearrange and combine the 솨 equations given above in order to determine the 솨1° for the overall fermentation reaction. This is the same method you have been using for other Hess’s Law problems. kl/mol b) As you worked with Hess’s Law in part a, you had to reverse reactions (changing the sign oAHP) and multiply through some reactions by a constant (multiplying the ΔHo value by the same constant) in order to get the correct overall stoichiometry. Given a table of AH values, you can do the same calculation using the following formula: AHorxn [Žn AHf° for products] [En-AH for reactants] Notice that multiplying each Δ.fo value times n (the number of moles in the balanced equation) and subtracting products minus reactants (changes the sign of values on the reactant side just like reversing the reaction) results in exactly the same manipulations you did using Hess’s Law Use the Δ+4° formula Just given to calculate the AHo for the alcohol fermentation reaction. Aro k)

Expert Answer

Answer

a] Question not given completely

b]

C6H12O6 ——> 2C2H5OH + 2CO2

delta Hrxn = delta H of products – delta H of reactants

delta hrxn = (2*delta Hf C2H5OH + 2*delta Hf CO2) – (delta Hf C6H12O6 )

delta Hrxn = -69.1 KJ/mol

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