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For the reaction SF_4(g) + F_2(s) rightarrow SF_6(g) the value of delta G degree

ID: 974264 • Letter: F

Question

For the reaction SF_4(g) + F_2(s) rightarrow SF_6(g) the value of delta G degree is -374 kJ. Use this value and data from Appendix 4 to calculate the value of delta Gdegree_f for SF_4(g). The value of delta G degree for the reaction is -5490. kJ. Use this value and data from Appendix 4 to calculate the standard free energy of formation for C_4H_10(g). Consider the reaction Use delta Gdegree_f values in Appendix 4 to calculate delta Gdegree for this reaction. Is this reaction spontaneous under standard conditions at 298 K?

Explanation / Answer

60. dGrxn = dGof(products) - dGof(reactants)

-5490 = (8 x -393.51 + 10 x -285.8) - (2 x dGof[C4H10])

Thus, standard free energy of formation for C4H10(g) = -258.04 kJ/mol

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