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17. 1 D

2 0.0 1NA

3 4Na+TiCl4=4NaCl+Ti

18. 1 copper sulfate bisulfate

I didn't write it.

19 1 Na+ CO3 2- Hco3-

2 2 2

3 6.02× 10 to the 23rd power

20 1 solution turns red.

2Fe3+ +3OH- =Fe(OH)3↓

3 didn't write

4 2Fe3+ +Cu=Cu2+ +2Fe2+

2 1 13 1.6g

2 1.6 mol

1mol 3 6.02× 10 to the 24th power.

3A Innovation Volume 6

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17 [1] 2al+2oh-+H2O = = = 2alo2-+3h2 (up arrow)

2 18Fe(OH)3+20Al = 10al 2 o 3+27 H2+6 fe3o 4

32 mg+CO2 = = 2 MgO+Celsius (condition: high temperature)

4Cu+2H2SO4 (concentration) = CuSO4+2H2O+SO2 = (condition: heating)

18 1 SO2+H2O=H2SO3

2 NH3+H2O = NH4 ++ OH-； 4NH3+5O2=4NO+6H20 (condition: catalyst, high temperature)

3Ca(HCO3)2+NaOH (small amount) =CaCO3↓+NaHCO3+H2O.

19 1 generates reddish-brown gas; 30

28nh 3+3c L2 = 6nh 4cl+N2； NH3

3al 3 ++ 3OH-= Al(OH)↓； 0.2 mol/l

20 1 hydrochloric acid; sodium hydroxide

2SiO2 amphoteric oxide

3 reddish brown; Fe3+ +3(OH)- =Fe(OH)3↓

42Al(OH)3=Al2O3+3H2O (condition; High temperature combustion)

2 1 1① turns white; oxidizability

2 colorless; Bleaching performance

③ Blue turns colorless; reducing power

2I2+SO2+2H2O=4H++I-+SO42-

3 No tail gas treatment device

22 14.48 liters

20.2 mol

Triferric (nitric acid) 3; 0.2 mol