www.tuhoc.edu.vn 22s22p63s23p63d54s1 21 Crom (II): CrO, Cr(OH)2, CrCl2 Crom (III): Cr2O3, Cr(OH)3, Cr2(SO4)3 Crom (VI): CrO3, H2Cr2O7, K2Cr2O7, NaCrO4 + O2, to Cr2O3 (r) + NH3 CrO3 o H2O CrCl3 (r) Cr +2 + HCl + H2SO4 (l) + Cl2 Cr + Br2 +3 OH– Cr(OH)2 +6 Cr Cr + SO2, KI + Zn H+ H2CrO4, H2Cr2O7 H+ + (O2 + H2O) Cr(OH)3 OH– [Cr(OH)4]– Tính oxi hóa có tính axit htttp://tuhoc.edu.vn/blog www.tuhoc.edu.vn (A (B (C (D 3+ (A) [Ar]3d6 (B) [Ar]3d5 (C) [Ar]3d4 (D) [Ar]3d3 (A) –2, –3, +6 (C) +2, +3, +6 (A) +2 (B) +2, +4, +6 (D) +3, +5 2Cr2O7 (B) +6 (D) +12 (C) +3 (A) Cr2O3, Cr(OH)2, CrCl3 (C) Cr2O3, Cr(OH)3, CrCl3 (B) CrO3, Cr(OH)3, Cr2(SO4)3 (D) CrO, KCrO4, Na2Cr2O7 A) CrCl2 (A) Ag B) CrCl3 (B) Au (A) 2Cr + O2 (C 2S3 C) CrO3 (C) Fe D) Cr2O3 (D) Cr không đúng? (B) 2Cr + 3Cl2 (D) 3Cr + N2 3N2 Cho phương trình: M + 2HCl → MCl2 + H2 M không sau đây? (A) Mg (B) Cr (C) Fe (D) Al A (A) Al, Mg, Cr (C) Fe, Cr, Al H2SO4 (B) Cu, Au, Ag (D) Na, K, Ba htttp://tuhoc.edu.vn/blog www.tuhoc.edu.vn B Trong câu sau đây, câu không đúng? (A) Crom (B) Crom kim (C (D C Phát 2 không so sánh tính (A) 2SO4 (B) (C) (D) D (A) không đúng? (B) (C) (D) E (A) CrO3, FeO, CrCl3, Cu2O (C) Fe2O3, Cu2O, Cr2O3, FeCl2 (B) Fe2O3, Cu2O, CrO, FeCl2 (D) Fe3O4, Cu2O, CrO, FeCl2 F (A) (B) (C) không đúng? Cr2+ (D) Crom(VI) oxit oxit bazơ G aK2Cr2O7 + bFeSO4 + cH2SO4 (A) 10 (B) 15 dCr2(SO4)3 + eFe2(SO4)3 + fK2SO4 + gH2O (C) 12 (D) 26 htttp://tuhoc.edu.vn/blog www.tuhoc.edu.vn H 2SO4 2CrO4 (A) (B) (C) (D) I (A) (B) (C) (D) J 2(SO4)3, sau 2O2 (A) không màu (B) vàng K (A) (C) xanh tím (C) da cam không (B) tính (C) CrO3 (D) 2O3, Cr(OH)3, CrO, Cr(OH)2 òn L (A) Cr(OH)3 sai? 3+ (B) (C) (D) thành Cr oxi hóa CrO2 thành CrO42 M Cr (A) CrCl2 Cr(OH)3 (C) CrCl3 K2CrO4 Cl2 (d−), to X KOH (®Æc, d−) + Cl2 Y (B) CrCl3 K2Cr2O7 (D) CrCl2 K2CrO4 htttp://tuhoc.edu.vn/blog www.tuhoc.edu.vn N (B.09 – 148): Cr(OH)3 KOH x (Cl2 + KOH) Y H2SO4 Z (FeSO4 + H2SO4 ) T (A) K2CrO4; KCrO2; K2Cr2O7; Cr2(SO4)3 (B) KCrO2; K2Cr2O7; K2CrO4; Cr2(SO4)3 (C) KCrO2; K2Cr2O7; K2CrO4; CrSO4 (D) KCrO2; K2CrO4; K2Cr2O7; Cr2(SO4)3 htttp://tuhoc.edu.vn/blog www.tuhoc.edu.vn 31 22s22p63s23p63d104s1 41 2, CuSO4 Cu(OH)2 CuSO4 xanh [Cu(NH3)4]2+ NH3 Cu(OH)2 OH– + (HCl + O2), HNO3, H2SO4 + dd FeCl3, AgNO3 H+ + O2 (không khí), to Cu CuSO4.5H2O Cu(NO3)2.3H2O Cu2+ (dd) không khí, 1000 oC 3), to Cu2 to CuCO3.Cu(OH)2 (r) + khí Cl2 khô CuCl2 (r) Tính oxi hóa htttp://tuhoc.edu.vn/blog www.tuhoc.edu.vn O (A (C (B (D P 2+ (A) [Ar]3d104s1 [Ar]3d84s1 (B) [Ar]4s23d9 [Ar]4s23d7 (C) [Kr]3d94s2 [Kr]3d9 (D) [Ar]3d104s1 [Ar]3d9 Q (A) + 2, +3 (C) 0, +2 (B) +1, +2 (D) +2, -2 R (A) Cu, Al, Fe, Ag (C) Al, Fe, Cu, Ag (B) Ag, Al, Cu, Fe (D) Ag, Cu, Al, Fe S (A (C (B (D T (A) 2Cu + O2 (B) Cu + S (C) Cu + Cl2 không đúng? +t + to 2CuO CuS o +t (D) Cu + 2HCl U (A) Cu + Pb(NO3)2 (C) Cu + H2SO4 VC o CuCl2 CuCl2 + H2 (B) (D) Cu + HCl (loãng) + O2 òa tan khí oxi (A (B) htttp://tuhoc.edu.vn/blog (C (D www.tuhoc.edu.vn W (A) Mg (B) Al (C) Cu X (D) Fe → Cu(NO3)2 + NO + H2O Sau (A) (C) (B) (D) Y (A) NaOH (C KNO3 (B) HCl (D Z (4) HNO3 3, (2) FeCl2, (3) H2SO4 (A) (1), (3), (5) (C) (1), (3), (4) (B) (1), (2), (3) (D) (1), (4), (5) a (A) Cu – Ni (C) Cu – Zn (B) Cu – Sn (D) Cu – Au b CuO không (A) CO (B) Cu (C) N2 c (A) Cu(OH)2 (C) CuSO4 (D) Al không (B) Cu(NO3)2 (D) CuCO3.Cu(OH)2 d (A (B (C (D OH)2 đúng? e (A) 2SO4 (B) (C) (D) htttp://tuhoc.edu.vn/blog www.tuhoc.edu.vn f (A) [Cu(NH3)4]OH (C) [Cu(NH3)4](OH)2 (B) [Ag(NH3)2]OH (D) [Zn(NH3)4](OH)2 g (A) CuO (C) CuSO4 khan (B) quì tím (D) Cu(OH)2 khan h + O2 , to CuFeS2 X + O2 , to (A) Cu2O, CuO (C) Cu2S, CuO Y + X, to Cu (B) CuS, CuO (D) Cu2S, Cu2O i (B.07 – 285): to (1) Cu2O + Cu2S (3) CuO + CO (A) to (B) (2) Cu(NO3)2 (4) CuO + NH3 (C) to to (D) htttp://tuhoc.edu.vn/blog www.tuhoc.edu.vn 51 Ag Au Ni Zn Sn Pb +1 +3 +2 +2 +2, +4 +2, +4 inoc – Công hóa Ag + 2HNO3 AgNO3 + NO2 + H2O 4Ag + 2H2S + O2 2Ag2S↓ + 2H2O – Vàng: Au + HNO3 + 3HCl – Niken: 2Ni + O2 Ni + Cl2 o 500 C to Zn + H2SO4 AuCl3 + 2H2O + NO↑ 2NiO NiCl2 ZnSO4 + H2↑ 2O Sn + O2 : 3HCl) to to Na2[Zn(OH)4] + H2↑ SnO2 3Sn + 8HNO3 (loãng) 3Sn + 16HNO3 – Chì: 3Sn(NO3)2 + 2NO + 4H2O 3Sn(NO3)4 + 4NO + 8H2O Na2[Sn(OH)6] + 2H2↑ 2O 3Pb + 8HNO3 (loãng) 3Pb(NO3)2 + 2NO + 4H2O 2O to Na2[Pb(OH)4] + H2↑ htttp://tuhoc.edu.vn/blog 10 www.tuhoc.edu.vn j không (A) Pb2+ + Sn Pb + Sn2+ (B) Sn2+ + Ni Sn + Ni2+ (C) Pb2+ + Ni Pb + Ni2+ (D) Sn2+ + Pb Pb2+ + Sn k 2+, Zn2+, Ag+, Sn2+, Au3+ Ion (A) Pb2+ Ni2+ (B) Ag+ Zn2+ (C) Au3+ Zn2+ (D) Ni2+ Sn2+ l (A (B (C (D 2SO4 loãng 3PO4 m (A (B (C) ion Ag+ + (D n (A) oxi không khí oxi hóa (B (C 2S (D 2O O2 có không khí o 2+ 2+ (A (B 2Cr3+ + 3Sn Câu sau 2+ (C) Sn2+ 3+ (D) Cr3+ 2+ htttp://tuhoc.edu.vn/blog 11 www.tuhoc.edu.vn p Ni2+ 2+/Ni? (A) Pb2+/Pb (B) Cu2+/Cu (C) Sn2+/Sn (D) Cr3+/Cr q (A) : – (B) : r (A) s (A (D + Sn2+ + H+ 2Cr2O7 (B) Mn2+ + Sn4+ + H2 (C) : + HCl (D) : KCl + CrCl3 + H2O + Cl2 Trong (C) 3 (D) 14 (B (D 2SO4 4, H2SO4 htttp://tuhoc.edu.vn/blog 12 www.tuhoc.edu.vn Câu Câu Câu D J B b C D K B c C C L B d A B M C e C C N D f C C O C g C D P D h B A Q B i A D R D j D A C S B k C B B T D l D C C U D m C D D V D n C E A W C o B F D X C p D G C Y C q D H C Z D r B I A a C s D htttp://tuhoc.edu.vn/blog 13 [...]... htttp://tuhoc.edu.vn/blog 11 www.tuhoc.edu.vn p Ni2+ 2+/Ni? (A) Pb2+/Pb (B) Cu2+/Cu (C) Sn2+/Sn (D) Cr3+/Cr q (A) 1 : 1 – 4 (B) 2 : 1 r (A) 3 s (A (D + Sn2+ + H+ 2Cr2O7 (B) 6 Mn2+ + Sn4+ + H2 (C) 4 : 1 + HCl (D) 5 : 2 KCl + CrCl3 + H2O + Cl2 Trong (C) 8 3 3 (D) 14 (B (D 2SO4 4, H2SO4 htttp://tuhoc.edu.vn/blog 12 www.tuhoc.edu.vn C u C u C u 1 D J B b C 2 D K B c C 3 C L B d A 4 B M C e C 5 C N D f C 6 C O C. .. htttp://tuhoc.edu.vn/blog 12 www.tuhoc.edu.vn C u C u C u 1 D J B b C 2 D K B c C 3 C L B d A 4 B M C e C 5 C N D f C 6 C O C g C 7 D P D h B 8 A Q B i A 9 D R D j D A C S B k C B B T D l D C C U D m C D D V D n C E A W C o B F D X C p D G C Y C q D H C Z D r B I A a C s D htttp://tuhoc.edu.vn/blog 13 ...www.tuhoc.edu.vn j không (A) Pb2+ + Sn Pb + Sn2+ (B) Sn2+ + Ni Sn + Ni2+ (C) Pb2+ + Ni Pb + Ni2+ (D) Sn2+ + Pb Pb2+ + Sn k 2+, Zn2+, Ag+, Sn2+, Au3+ Ion (A) Pb2+ và Ni2+ (B) Ag+ và Zn2+ (C) Au3+ và Zn2+ (D) Ni2+ và Sn2+ l (A (B (C (D 2SO4 loãng 3PO4 3 m (A (B (C) ion Ag+ + (D n do (A) oxi không khí oxi hóa (B 2 (C 2S (D 2O và O2 c trong không khí o 2+ 2+ (A (B 2Cr3+ + 3Sn C u nào sau 2+ (C) Sn2+ 3+ (D) Cr3+