Question

65. 2Zn + O2 → 2ZnO; AGO = -616 J
2Zn + S2 → 2ZnS; AG° = -293 J
S2 + 202 → 2802; AG° = -408 J
AG°for the following reaction
2ZnS + 302 2ZnO + 250, is
(1) -1462 J
(2) -1317 J
(3) -501 J
(4) -731 J

Please elaborate.​

Answer 1

Answer:

Correct ans. is -731

Explanation:

For the reaction,

2ZnS+ 3O2 ---> 2ZnO + 25O

∆G° = ∆G°(1) +∆G°(3) -∆G°(2)

= -616-408+293 = -731

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