Q.31. To prepare sulfur from hydrogen sulfide extracted from the natural gas, the hydrogen sulfide gas with sulfur dioxide gaseous: we thus obtain liquid sulfur and water steam. 1) Write the equation of this reaction and calculate, using the data, its standard enthalpy at 298K. 2) Explain why the standard enthalpy of formation of liquid sulfur isn't zero? (Explain in one sentence only). Given: Standard molar enthalpies of formation at 298.15K Substance and State AH° (kJ/mol) SO, (g) -298.8 S(1) S(s) +11.8 H,S(g) -20.6 H,O(g) -241.8 H,O(1) -286

Q.31. To prepare sulfur from hydrogen sulfide extracted from the natural gas, the hydrogen sulfide gas with sulfur dioxide gaseous: we thus obtain liquid sulfur and water steam. 1) Write the equation of this reaction and calculate, using the data, its standard enthalpy at 298K. 2) Explain why the standard enthalpy of formation of liquid sulfur isn't zero? (Explain in one sentence only). Given: Standard molar enthalpies of formation at 298.15K Substance and State AH° (kJ/mol) SO, (g) -298.8 S(1) S(s) +11.8 H,S(g) -20.6 H,O(g) -241.8 H,O(1) -286

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section: Chapter Questions

Problem 96QRT

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