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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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VD2:<br />

2<br />

xO y .<br />

xO y + yCO xFe + yCO 2 (*)<br />

Fe x O y<br />

2<br />

n = a + b = 4, 48 0,2 (mol)<br />

22, 4<br />

a 3<br />

b 1<br />

1<br />

2<br />

1 , 2 a = 0,15; b = 0,05.<br />

m m m m 5,6 (gam) n 0,1 (mol)<br />

Fe oxit CO (ban ®Çu) hçn hîp khÝ Fe<br />

nFe<br />

x 0,1 2<br />

n y 0,15 3<br />

CO2<br />

2O 3 .<br />

2<br />

A) Fe 2 O 3 . B) Fe 3 O 4 .<br />

C) FeO. D)<br />

3 Cho 32,48 gam oxit M x O y<br />

2 xO y là<br />

A) CuO. B) FeO. C) Fe 3 O 4 . D) ZnO.<br />

4<br />

2<br />

A) Fe 3 O 4 . B) CuO. C) Fe 2 O 3 . D) ZnO.<br />

2<br />

255

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