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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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Al 2 O 3 + 6HCl<br />

Al(OH) 3 + 3HCl<br />

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

AlCl 3 + 3H 2 O<br />

Al 2 O 3 + 2NaOH + 3H 2 O 2Na[Al(OH) 4 ]<br />

Al(OH) 3 + NaOH Na[Al(OH) 4 ]<br />

4] -<br />

H 2 CO 3 3 ).<br />

Al(OH) 3 3 .<br />

2 (đktc<br />

2O 3<br />

3<br />

(A) 0,448. (B) 0,224. (C) 1,344. (D) 0,672.<br />

2Al + 6HCl 2AlCl 3 + 3H 2 (1)<br />

Al 2 O 3 + 6HCl 2AlCl 3 + 3H 2 O (2)<br />

AlCl 3 + 3NH 3 + 3H 2 O Al(OH) 3 + 3NH 4 Cl (3)<br />

HCl + NH 3 NH 4 Cl (4)<br />

2Al(OH) t o<br />

3 Al 2 O 3 + 3H 2 O (5)<br />

n x (mol);n y (mol)<br />

Al<br />

Al2O3<br />

27x + 102y = 1,56 ( )<br />

) và (<br />

nH 1,5x 0,03 (mol)<br />

2<br />

2nAl 2O<br />

0,04<br />

3<br />

( )<br />

V = 22,4.0,03 = 0,672 (lít).<br />

1<br />

326

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