3.22 Tính thể tích khí clo thu được ở điều kiện tiêu chuẩn khi đun nóng nhẹ 2,61 gam MnO2 với dung dịch axit clohiđric đặc dư. Lượng clo này phản ứng hết bao nhiêu gam sắt kim loại.
Giải
- Số mol của MnO2:
= = 0,030 mol
- Phương trình phản ứng:
MnO2 + 4HCl MnCl2 + Cl2 + 2H2O (1)
- Theo phương trình phản ứng (1) số mol của Cl2 sinh ra:
= = 0,030 mol
- Thể tích khí Cl2 thu được:
= 22,4.0,030 = 0,672 lít
- Phản ứng với Fe:
3Cl2 + 2Fe 2FeCl3 (2)
nFe = ![](data:image/png;base64,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) = 0,02 mol
- Khối lượng sắt đã tham gia phản ứng:
mFe = 56.0,02 = 1,12 gam
Chia sẻ với bạn bè của bạn: |