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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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14 2O2)<br />

2O 2 .<br />

Trong H 2 O 2 2 O 2<br />

KNO 2 , PbS …<br />

H 2 O 2 + 2KI I 2 + 2KOH<br />

H 2 O 2 + KNO 2 H 2 O + KNO 3<br />

4H 2 O 2 + PbS PbSO 4 + 4H 2 O<br />

Ag 2 O, O 3 , KMnO 4 …<br />

H 2 O 2 + Ag 2 O 2Ag + H 2 O + O 2<br />

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

5H 2 O 2 + 2KMnO 4 + 3H 2 SO 4<br />

K 2 SO 4 + 2MnSO 4 + 5O 2 + 8H 2 O<br />

H 2 O 2<br />

L<br />

(A (B<br />

(C (D<br />

M<br />

(A) +1. (B) –2. (C) +2. (D) –1.<br />

N<br />

H 2 O 2 + 2KI<br />

I 2 + 2KOH<br />

H 2 O 2 + Ag 2 O 2Ag + H 2 O + O 2<br />

(A) H 2 O 2<br />

(B) H 2 O 2<br />

(C) H 2 O 2<br />

(D) H 2 O 2<br />

O 2O + O 2 2KOH + I 2 + O 2<br />

(2) 2KI + H 2 O 2 2KOH + I 2<br />

(A (B<br />

(C (D<br />

5<br />

162

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