Question

1.Cho 3,6g kim loai X tac dung vua du voi 5,6 lit hon hop khi gom oxi va hidro co ti khoi so voi hidro la 5,5. Xac dinh kim loai X? Biet kim loai X chi tac dung voi O₂

2.Cho 9,66g Na tac dung voi 5,88 lit hon hop oxi va nito (dktc) (trong do oxi chiem 80% ve the tich ).Biet Na chi tac dung voi O₂

a) Hay tinh khoi luong Na₂O thu duoc, biet nito khong phan ung

b) Hay cho biet hon hop khi sau phan ung nang hay nhe hon hon hop khi truoc phan ung

3.Thuc hien phan ung giua 10,8g kim loai B voi 17,92 lit hon hop O₂ va CO₂ (dktc) co ti khoi so voi hidro la 18,25. Sau phan ung thu duoc hon hop khi co ti khoi so voi hidro la 19,6. Xac dinh B? Biet kim loai B chi phan ung voi O₂.

4.Cho 11,2g Fe tac dung voi 150g hon hop gom HCL va H₂SO₄ thi thu duoc 4480 ml H₂ (dktc). Fe +HCL------->FeCl₂ + H₂ ;Fe+H₂SO₄ ----->FeSO₄ + H₂

a)Chung minh Fe het

b)Tinh tong khoi luong hai muoi thu duoc biet the tich H₂ sinh ra o hai phan ung la nhu nhau

Answer 1

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