In the laboratory, it is necessary to fill a 1.5 liter jar with oxygen. Can this be done if there is only 15.8 g of KMnO₄?
| July 27, 2021 | education
Solution:
1) n (KMnO₄) = 15.8 / 158 = 0.1 mol
2) 2KMnO₄ = K₂MnO₄ + MnO₂ + O₂
3) n (O₂) = 0.1 / 2 = 0.05 mol
4) V (O₂) = 0.05 * 22.4 = 1.12 L – not enough
Answer: not enough
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