Question

Maximum Useful Work from a Fuel Cell. What is the maximum useful work which can be obtained from a hydrogen-oxygen fuel cell that produces 1.15 kg of water at 25°C? (Assume 1 atm pressure for the gases.) Submit Answer Tries 0/5

Please show all work step by step and final answer.

Answer 1

The complete calculation of the maximum useful work is given as below:-

gi ven that, mass al w aten 115 k .I15o = Molecul an wei ght a Ha20 18 mol Numb en amolep a h20 = 63.89molep 181mot S, the numb en a moles alo = 63.89 mo ler Eceae fon tydno gen -o xzen fuel ceal 23V numb en al elecbrong t ansfened and e Congt ant (F) 96500 C/mof Fan ad wank done (maxi mum) y ven by FEcee w 4G -nF whene, n2 Thun 2x 96 So o X 23 JImeR-237390 JImee w 2 w-237390 Jmop

since, tha umb en al mdl es (n)= 63.89 molep Then (C3.89 molesx 237390 /mol Wニ-1S)66847.1 丁 On since, IK l000 Cmaxi mum) siven by Then won done kJ Wニー1S.1 xlo3

Negative sign of work is due to the work done by the system only.