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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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p<br />

Ni 2+<br />

(A) Pb 2+ /Pb.<br />

(C) Sn 2+ /Sn.<br />

2+ /Ni?<br />

(B) Cu 2+ /Cu.<br />

(D) Cr 3+ /Cr.<br />

q 4 – + Sn 2+ + H + Mn 2+ + Sn 4+ + H 2<br />

(A) 1 : 1. (B) 2 : 1. (C) 4 : 1. (D) 5 : 2.<br />

r 2Cr 2 O 7 + HCl KCl + CrCl 3 + H 2 O + Cl 2 . Trong<br />

(A) 3. (B) 6. (C) 8. (D) 14.<br />

s<br />

(A 3 (B 2SO 4<br />

(D 3. (D 4, H 2 SO 4 .<br />

12<br />

373

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