参考答案
1 2 3 4 5 6 7 8 9 10 A B A C C D C A C C 11. NaOH 2Al+2NaOH+2H2O=2NaAlO2+3H2↑
12.(1)Al
(2)二氧化碳与氢氧化钠反应 CO2+2NaOH=Na2CO3+H2O
(3)铝与氢氧化钠反应 2Al+2NaOH+2H2O=2NaAlO2+3H2↑
13. ⑴ Ba2+ ⑵Cl- 、NO3- ⑶Cu2+ 、H+ 、CO32-
14.(1)2Al+2NaOH+2H2O=2NaAlO2+3H2↑
54g 2mol
8.1g n(NaOH)
8.1g×2mol
n(NaOH)= = 0.3mol
54g
(2)2Al+2NaOH+2H2O=2NaAlO2+3H2↑
54g 67.2L
8.1g V(H2)
8.1g×67.2L
V(H2)= = 10.08L
54g