Question

2Zn + O2 → 2ZNO; AG° = -616 J
2Zn + S2 → 2ZnS; AG° = -293 J
S2 + 202 → 250; AG° = -408 J
AGº for the following reaction
2ZnS + 3022ZNO + 250, is
(1) -1462 J
(2) -1317 J
(3) -501 J
(4) -731 J​

Answer 1

Answer:

2 is the right answer. I'm not correct about the answer

Answer 2

Answer:

simply add G° gibb energy is add/subtract but

E° cell is not simply add/ subtract

Explanation:

so G° = -616 -408+ 293 ( reverse sign acc to net rection product) = -731 J

option d