
trả bài SẮT 12A6
Authored by Thuý Phạm
Chemistry
KG - 12th Grade
Used 1+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 2. Fe3+có cấu hình e là:
Ar]3d34s2
. [Ar]3d5
[Ar]3d6
. [Ar]3d6 4s2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu 4. Sắt tan được trong dung dịch nào sau đây?
. AlCl3
FeCl3
FeCl2
. MgCl2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sắt tác dụng với dãy chất nào sau đây sinh ra sắt (III)?
Cl2, S
Cl2, HNO3 loãng
Br2, HNO3 đ,nguội
. I2, H2SO4 loãng
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
. Phản ứng nào sau đây chỉ xãy ra với H2SO4 ĐẶC
. Fe2O3 + H2SO4 → Fe2(SO4)3 + H2O
FeO + H2SO4 → Fe2(SO4)3 + SO2 + H2O
Fe(OH)3 + H2SO4 → Fe2(SO4)3 + H2O
Fe + H2SO4 → FeSO4 + H2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quặng giàu sắt nhất trong tự nhiên nhưng hiếm là
hematit
Xiđehit
manhetit
pirit
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nhúng mẫu sắt vào dung dịch AgNO3 khi kết thúc thì mẩu sắt thay đổi so với ban đầu là
Tăng
Giảm
Không đổi
Không xác định được
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fe sẽ bị ăn mòn trong trường hợp nào sau đây?
Cho Fe vào H2O ở điều kiện thường
Cho Fe vào bình chứa O2 khô
Cho Fe vào bình chứa O2 ẩm
A, B đúng
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