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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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Chú ý<br />

– Cl +5 -2 là<br />

3<br />

VD9: 3 KCl + O 2<br />

– B1, B2, B3:<br />

5 2<br />

o<br />

1 0<br />

t<br />

3 2<br />

K ClO K Cl O<br />

2 0<br />

2O 4e O2<br />

5 1<br />

Cl + 6e Cl<br />

t<br />

o<br />

x 3<br />

x 2<br />

2 0<br />

6 O 12e 3O2<br />

5 1<br />

2Cl + 12e 2Cl<br />

t<br />

o<br />

2KClO 3 2KCl + 3O 2<br />

Chú ý<br />

2, Br 2 …<br />

VD10: 2 + KOH KCl + KClO 3 + H 2 O<br />

– B1, B2, B3:<br />

0<br />

o<br />

1 5<br />

t<br />

Cl 2 + KOH<br />

3 2<br />

t<br />

o<br />

K Cl + K ClO + H O<br />

0<br />

Cl - 5e<br />

Cl<br />

0 1<br />

Cl + 1e Cl<br />

5<br />

x 5<br />

x 1<br />

0<br />

Cl - 5e<br />

Cl<br />

0 1<br />

5Cl + 5e 5Cl<br />

5<br />

3Cl 2 + 6KOH<br />

o<br />

t<br />

5KCl + KClO 3 + 3H 2 O<br />

6<br />

59

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