The rapid depletion of fossil fuels has inspired extensive research in the area of alternative and renewale energy sources. Of these, hydroden is the most Contemplated fuel of the future . Howevercost effective production and hazard free storage are major issuses is using `H_(2)` (Note : use the data in table-1 given at the end of partA, whenever necessary.)
1kg of hydrogen is burnt with oxgyen at `25^(@)C` and the heat energy is used for different purpose . Using this heat calculate
(i) the maximum theoretical work.
(ii) work that can be produced by a heat engine working between `25^(@)C` to `300^(@)` C. (The efficiency of a heat engine =work done /heat absorbed =`[1-9T_("low")//T_("high")]` where T is in K)

Answer

(i) `DeltaG` is the max work`=-1.2 xx 10^(5)KJ`
(ii) Heat engine `=-6.9 xx 10^(4) KJ`