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baby120804
2 năm trước
Trong phòng thí nghiệm người ta điều chế khí O2 bằng cách nhiệt phân KMnO4 hoặc KClO3. Biết rằng cứ 47,4g KMnO4 thì thu được 2,24 lít O2, còn cứ dùng 30,625g KClO3 thì nhiệt phân thu được 3,36 lít O2. Các khí đo cùng đktc. Vậy hiệu suất chất nào đạt cao hơn.
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