Kiểm tra hóa 9 tiết 20
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Trường THCS Xi Măng
Họ và tên: ............................................. KIỂM TRA 15p
Lớp: 9 Môn: Hoá học
Đề bài
Câu 11: ( 2 đ) Viết Phương trình hóa học thực hiện những chuyển đổi hóa học sau:
Fe FeCl
2
FeCl
3
Fe(OH)
3
Fe
2
O
3
Câu 12 : ( 1 đ) Chỉ dùng thêm 1 hóa chất, hãy nhận biết 2 dung dịch Na
2
SO
4
và Na
2
CO
3
Câu 13 :( 2đ) Cho một lượng Fe
2
O
3
tác dụng vừa đủ với 300g dung dịch HCl 3,65% thu được
dung dịch A.
a/Tính khối lượng Fe
2
O
3
đã tham gia phản ứng.
b/Tính thể tích dung dịch NaOH 2M cần dùng để tác dụng hết dung dịch A và khối lượng kết
tủa thu được .
Cho biết: Fe = 56 ; Cl = 35,5 ; O = 16 ; H = 1 ; Na = 23
Bài làm
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