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BÀI TẬP TRẮC NGHIỆM HÓA ĐẠI CƯƠNG VÀ VÔ CƠ CẨM NANG DÙNG LUYỆN THI THPTQG CHẤT LƯỢNG CAO (COLOR BOOK)

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1<br />

2<br />

2s 2 2p 6 3s 2 3p 6 3d 6 4s 2 hay [Ar]3d 6 4s 2 .<br />

2+<br />

: [Ar]3d 6 3+ : [Ar]3d 5<br />

12<br />

2+<br />

và Fe 3+ .<br />

+ Phi kim<br />

+ Axit<br />

Fe 2+ 3+ Fe + Cl t o<br />

2 FeCl 3<br />

Fe + S<br />

o<br />

t<br />

FeS<br />

2SO 4 loãng 2<br />

Fe + 2HCl FeCl 2 + H 2<br />

3, H 2SO 4<br />

Fe + 4HNO 3 Fe(NO 3) 3 + NO + 2H 2O<br />

2Fe + 6H 2SO 4<br />

o<br />

Fe 2(SO 4) 3 + 3SO 2 + 6H 2O<br />

3, H 2SO 4<br />

2+ 3+<br />

.<br />

Fe + CuSO 4 Cu + FeSO 4<br />

+ H 2 O<br />

Fe + 3AgNO 3 3Ag + Fe(NO 3) 3<br />

2.<br />

2O.<br />

3Fe + 4H 2O t o o<br />

Fe 3O 4 + 4H 2<br />

Fe + H 2 O t o > 570 o<br />

C<br />

FeO + H 2<br />

1<br />

333

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