question_answer

The factor of \[\Delta G\] values is important in metallurgy. The \[\Delta G\] values for the following reactions at \[800 {}^\circ C\] are given as: \[{{\operatorname{S}}_{2}}(s)\,+2{{O}_{2}}\,(g)\,\,\xrightarrow{{}}\,\,2S{{O}_{2}};\,\,\Delta G=-\,544\,kJ\] \[2\,Zn\,(s)+{{S}_{2}}(s)\,\,\xrightarrow{{}}\,\,2ZnS(s);\,\,\Delta G=-\,293\,kJ\] \[2\,Zn(s)+{{O}_{2}}(g)\,\,\xrightarrow{{}}\,\,2ZnO(s);\,\,\Delta G=-\,480\,kJ\] Then \[\Delta G\] for the reaction \[2\,ZnS(s)\,\,+\,\,3{{O}_{2}}(g)\,\,\xrightarrow{{}}\,\,2ZnO\,(s)+2S{{O}_{2}}(g)\] will be:

Answer:

(-731)