高中氧化还原反应配平练习题及答案
发布时间:2020-07-25 06:00:37
发布时间:2020-07-25 06:00:37
配平方程式
i .下列化学方程式配平正确的是
A 2KMnO 4+11H 2S +5H 2SO 4=K 2SO 4+2MnSO 4+13S ↓+16H 2O
B 2KMnO 4+8H 2S +4H 2SO 4=K 2SO 4+2MnSO 4+9S ↓+12H 2O
C 2KMnO 4+5H 2S +3H 2SO 4=K 2SO 4+2MnSO 4+S ↓+4H 2O
D 2KMnO 4+5H 2S +3H 2SO 4=K 2SO 4+2MnSO 4+5S ↓+8H 2O
ii .配平下列以KMnO 4为氧化剂的氧化-还原反应
(1) KMnO 4+ SO 2+ H 2O -4+ K 2SO 4+ H 2SO 4
(2) KMnO 4+ K 2SO 3+ H 2O -MnO 2+ K 2SO 4+ KOH
(3) KMnO 4+ KNO 2+ - MnSO 4+ K 2SO 4+ KNO 3+ H 2O
(4) KMnO 4+ H 2S +H 2SO 4- K 2SO 4+ MnSO 4+ S ↓+
2O
(5) KMnO 4+ H 2O 2+ H 2SO 4- K 2SO 4+ MnSO 4+ O 2↑+
2O
(6) KMnO 4+ HCl - MnCl 2+ Cl 2+ KCl + H 2O
(7) KMnO 4+ NaOH + PH 3- K 2MnO 4+ Na 2MnO 4+
Na 3PO 4+ H 2O
(8) KMnO 4+ FeCl 2+ H 2SO 4- K 2SO 4+ MnSO 4+
Fe 2(SO4 3+ Cl 2+ H 2O
iii .配平下列以Cr (Ⅵ)为氧化剂的氧化-还原反应
(1) K 2Cr 2O 7+ C + H 2SO 4- K 2SO 4+ Cr 2(SO4 3+ CO 2+
2O
(2) KI + K 2CrO 4+ HCl - CrCl 3+ KCl + I 2+ H 2O
(3) K 2Cr 2O 7+ Fe 3O 4+ H 2SO 4- Cr 2(SO4 3+ Fe 2(SO4 3+
K 2SO 4+ H 2O
(4) K 2Cr 2O 7+ KI + - CrPO 4+ K 3PO 4+ I 2+ H 2O
iv .配平下列以HNO 3为氧化剂的氧化-还原反应
(1) Cu + HNO 3- Cu(NO3 2+ NO + H 2O
(2) FeSO 4+ HNO 3+ H 2SO 4- Fe 2(SO4 3+ NO + H 2O
(3) Zn + HNO 3- Zn(NO3 2+ NH 4NO 3+ H 2O
(4) As 2S 3+ HNO 3- H 3AsO 4+ S + NO 2+ H 2O
(5) P + HNO 3+ H 2O -H 3PO 4+ NO
(6) P + HNO 3- H 3PO 4+ NO 2+ H 2O
(7) AsH 3+ HNO 3- H 3AsO 4+ NO 2+ H 2O
(8) As 2O 3+ HNO 3+ H 2O -3AsO 4+ NO
(9) Cu 2S +3- S + NO + Cu(NO3 2+ H 2O
(10) Cu 2S +HNO 3- H 2SO 4+ NO + Cu(NO3 2+ H 2O
()112+ HNO 3= Fe(NO3 3+ SO 2+ NO + H 2O
(12) Fe 3P +HNO 3- Fe(NO3 3+ NO + H 3PO 4+ H 2O
(13) Fe 3C +3- CO 2+ NO + Fe(NO3 3+ H 2O
v .配平下列氧化-还原反应
(1) KNO 2- K 2O +NO +O 2
(2) P + KOH + H 2O -3+ KH 2PO 2
(3) FeS 2+ CuSO 4+ H 2O -4+ Cu 2S +2SO 4
(4) P + CuSO 4+ H 2O -+H 3PO 4+ H 2SO 4
(5) P + CuSO 4+ H 2O -3P +H 3PO 4+ H 2SO 4
(6) HClO 3+ P 4+ H 2O -HCl +H 3PO 4
(7) Fe(OH3+ NaOH + Cl 2- Na 2FeO 4+ NaCl + H 2O
(8) KI + H 2SO 4- I 2+ H 2S +4+ H 2O
(9) PbO 2+ H 2SO 4- PbSO 4+ O 2+ H 2O
(10) AsH 3+ AgNO 3+ H 2O -As 2O 3+ Ag + HNO 3
()114ClO 4- N 2↑+ HCl ↑+ O 2↑+ H 2O
()124NO 3- N 2+ NO 2+ H 2O
(13) NH 4NO 3- N 2+ HNO 3+ H 2O
(14) S + KOH - K 2S +K 2SO 3+ H 2O
(15) NO 2+ NaOH - NaNO 2+ NaNO 3+ H 2O
(16) F 2+ NH 3- NH 4F +2
(17) FeS 2+ O 2- Fe 2O 3+ SO 2
(18) Cu(IO3 2+ KI + H 2SO 4- CuI ↓+ I 2+ K 2SO 4+
H 2O
vi .配平下列含x 的氧化-还原反应
(1) S + Ca(OH2- CaS 2O 3+ CaS ·S x + H 2O
(2) Na 2S x + NaClO + NaOH - Na 2SO 4+ NaCl + H 2O
(3) NO x + NH 3- N 2+ H 2O
vii .配平下列离子氧化-还原反应
--(1) A n + B x - A y + B m
---(2) Cl m + OH -ClO n + Cl + H 2O
-+++-(3) BiO 3+ Mn 2+ H - Bi 3+ MnO 4+ H 2O
+++(4) VO 2+ H 2C 2O 4·2H 2O +- VO 2+ CO 2↑+ H 2O
viii .配平下列氧化还原方程式
(1) F 2+ NH 3- NH 4F +2
+++(2) VO 2+ H 2C 2O 4·2H 2O +- VO 2+ CO 2↑+ H 2O
(3) P 4+ CuSO 4+ H 2O -3P +H 3PO 4+ H 2SO 4 i D ii (1)2 5 2 2 1 2 (2)2 3 1 2 3 2 (3)2 5 3H2SO 4 2 1 5 3 (4)2 5 3 1 2 5 8
(5)2 5 3 1 2 5 8 (6)2 16 2 5 2 8 (7)8 11 1 4 4 1 7 (8)6 10 24 3 6 5 10 24
iii (1)2 3 8 2 2 3 8 (2)6 2 16 2 10 3 8 (3)1 6 31 1 9 1 31
(4)3 18 14H3PO 4 6 8 9 21
iv (1)3 8 3 2 4 (2)6 2 3 3 2 4 (3)4 10 4 1 3 (4)1 10 2 3 10 2 (5)3 5 2 3 5
(6)1 5 1 5 1 (7)1 8 1 8 4 (8)3 4 7 6 4 (9)3 16 3 4 6 8 (10)3 22 3 10 6 8
(11)3 41 9 14 3 16 (12)3 40 3 13 9 20
(v 1)4 2 4 3 (2)4 3 3 1 3 (3)5 14 12 5 7 12 (4)2 5 8 5 2 5
(5)11 15 24 5 6 15 (6)10 3 18 10 12 (7)2 10 3 2 6 8 (8)8 9 4 1 8 4
(9)2 2 2 1 2 (10)2 12 3 1 12 12 (11)4 2 4 5 6 (12)4 3 2 8 (13)5 4 2 9
(14)3 6 2 1 3 (15)2 2 1 1 1 (16)3 8 6 1 (17)4 11 2 8
(18)2 24 12 2 13 12 12
vi (1)2x +4 3 1 2 3 (2)1 3x+1 2x-2 x 3x+1 x-1 (3)6 4x 2x+3 6x