Question

已知热化学方程2KNO₃(s)＝2KNO₂(s)+O₂(g)；△H＝+58kJ/mol；C(s)+O₂(g)＝CO₂(g)；△H＝-94kJ/mol．为提供分解1molKNO₃所需能量理论上需燃烧碳

1. A.
   58/94mol
2. B.
   58/(94×2)mol
3. C.
   (58×2)/94mol
4. D.
   (94×2)/58mol

Answer 1

B