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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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D Hòa tan hoàn toàn Fe 3 O 4 2 SO 4<br />

loãng (dư), thu 3) 2 ,<br />

KMnO 4 , BaCl 2 , Cl 2<br />

ă<br />

(A) 4. (B) 6. (C) 5. (D) 7.<br />

E 2SO 4<br />

+6<br />

là SO 2 )?<br />

(A) Fe 3 O 4 .<br />

(B) FeS.<br />

(C) FeCO 3 . (D) Fe(OH) 2 .<br />

F<br />

H 2 SO 4<br />

2 (là<br />

(A) FeS. (B) FeS 2 . (C) FeO (D) FeCO 3 .<br />

G<br />

3O 4<br />

(A) 1394,90. (B) 1325,02.<br />

(C) 1311,90. (D) 959,59.<br />

H<br />

Hoà tan hoàn toàn 0,1 mol FeS 2 trong 200 ml dung<br />

3 đư<br />

đa<br />

quá trình trên, N +5<br />

m là<br />

(A) 12,8. (B) 6,4. (C) 9,6. (D) 3,2.<br />

10<br />

361

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