S298 2. Without the aid of thermodynamic computer software produce an Eh-pH diagram for the zinc/water system that includes the species Zn+, Zno, ZnO2?', and Zn, at 50C with dissolved zinc species activities of 1x102. Modify the zinc/water diagram by adding Zn(NH3)42+, NH3, and NH4+, with dissolved ammonia activities of 2, to produce a zinc/ammonia/water Eh-pH diagram. Be sure to draw the 02/H20 and H*/H2 lines at p= 1 atm for both diagrams. Use FactSage to draw the same diagram (Modified from Question 3.5 in textbook) AG Species State 298 /Jmol' /J mol! /J mol''K Zno -320,467 -350,460 43.64 Zn2+ aq -147,031 -153,971 -112.13 Zn 0 0 41.72 NH3 aq -26,531 -80,291 111.29 NH4+ aq -79,497 -132,633 113.39 Zn(NH3)2+ -302,000 -533,460 301.25 S S aq H 0 0 0 aq 1 HO -285,830 69.95 -237,190 0 02 g 0 205.04 130.57 H2 8 8 0 0