1、 2 1 120 160 38 2 3 H-1 C-12 N-14 O-16 Na-23 Cl-35.5 Fe-56 Ag-108 3 60 1 A B C D 2 pH pH 6.5 7.0-7.1 7.5-8.5 8.5-12.0 12.5 A B C D 3 1kw A B C D 4 Cr A B C D 5 A. B. C. D. 6 A B C D 21 7 A B C D 8 A. B. C. D. 9 (CO 2 ) (H 2 O) A. B C. D 10 A 21 B C D 11 A B C D 21 12 80.5m 1.085m 22m 1O A B C D 13 A
2、 B C D 14 60 220 110 A B C D 21 15 Cl 271 NH 317 : , , Z,X,X,K A. B. C. D.NaOH 16 17 200 5.1 A 21 B C D 18 A B C FeCl 2 HCl D FeCl 2 CuCl 219 A B C D 21 20 Na 2 SO 4 Na 2 CO 3 BaCl 2 NaOH A NaOH B Na 2 SO 4C BaCl 2 D Na 2 CO 3 N a 2 SO 4 3 60 21 _ 0 _ 21 22 23 52 ? ! 24 a b _ b _ 21 25 A B 21 26 PTC
3、 220 60 _ _ ( 21 27 1 30 _ _ ( :Zxxk.Com 28 A O B AO 10cm BO 30cm 0.5kg kg 29 Fe(OH) 2 Fe(OH) 3 Fe(OH) 2 Fe(OH) 2 21 A A B Fe(OH) 2 Fe(OH) 3 21 Fe(OH) 2 2 30 30 21 21 :Z xx k.Com 31 - - - mA 1.43 4.26 4.63 V 0.6 1.2 1.3 pH 21 32 O A O A O x B m 21 OA x/cm m/g 30 t/s 1 4 50 30 2 6 50 30 3 8 50 30 33 18 ? 21 : a ( 34 (1) ( ) - 3.8V _ (2) ? _ 21 (35 36 6 37 38 9 30 ) 35 NO 1 11.8 3.5 10 10 9 /L 2 85.0 50 70 % 3 3.0 3.5 5 10 12 /L 4 90 110 150 g/L 5 210.0 100 300 10 9 /L 6 2.1 0.7 4 10 9 /L 7 101 80 120 mg/100mL 8 A 21 : # # 21 36 6 10 8 40 21 (1) 1 10 3 2 ? (2) l.2 10 6 1.2 10 6 8000 ? 37 21 8g
