(精练册)第2单元 我们周围的空气-2023年新疆【练客中考】化学总复习新思路

中考新思路·新疆化学 精练册 新疆中考常见化学方程式梳理 (2)NaOH+HCI=NaCl +H,O 、化合反应 (3)2NaOH+H,S0,= =NaS0+2H,0 1.(1)3Fe+20 点燃Fe,O, (4)Ca(OH),+2HCI CaCl,+2H,O (5)Ca(0H)2+HS04=CaS04+2H20 (6)3HCI Fe(OH)=FeCl,+3H,O (2)2Mg+02 点燃2Mg0 (7)Ba(OH),+2HCI =BaCl,+2H,O (3)2Gu+0,△2Gu0 (8)Ba(0H)2+H2S0,=BaS04↓+2H20 (4)4A1+30,=2AL,0 (9)KOH+HCI-KCI+H,O 2.(1)2H2+0 点燃2H,0 (10)Mg(OH)+2HCI=MgCl,+2H,O 3.(1)CaCO +2HCI==CaCl,+CO,+H2O (22C+0,点整200 (2)Na,CO,+2HCI=2NaCl +CO,T+H,O (3)HCI+AgNO,=AgCI +HNO, (3)C+0,点燃c0, (4)NaHC0,+HCl—NaCI+CO,↑+H,O (4)s+0,点燃s0, (5)H,SO BaCl,=BaSO,+2HCI (6)NH,HCO,HCI=NH CI +HO+CO2 (5)4P+50,点攀2P,0, 4.(1)Na,C03+Ca(0H)2= CaCO,I +2NaOH (2)CuSO,+2NaOH- Na,S0,+Cu(OH)2↓ 3.2c0+0,点燃2c0, (3)2NaOH CuCl =2NaCl +Cu(OH), 4.C02+H20=HC03 (4)3NaOH+FeCl,=Fe(OH)+3NaCl 5.Ca0+H20= Ca(OH)2 (5)2NH CI +Ca(OH)=CaCl,+2NH1 +2H,O 6.C+C0,高温2C0 (6)Naz CO3 +Ba(OH)2=BaCO3+2NaOH (7)Ca(0H)2+CuS0,= =CaSO Cu(OH), 二、分解反应 (8)Ca(OH)2 +MgCl2 =CaCl2 +Mg(OH)2 1.(1)2KMn0,△K,Mn0+Mn0,+0,1 (9)2NaOH MgCl,==2NaCl Mg(OH)2 (10)NH,HC0,+2Na0H△Na,C0,+NH,↑+2H,0 (2)2H,0, M0:2H,0+0,↑ (11)3Ca(OH),+2FeCl=2Fe(OH)3+3CaCl, MnO, 5.(1)Na,CO,CaCl, =CaCO3↓+2NaCl (3)2KCl0,22KC1+302↑ (2)Na,CO,BaCl, =BaCO3↓+2NaCl (3)K2 CO +CaCl CaCO, +2KCI 2.2H,0通电2H↑+0，↑ (4)CuSO,BaCl =BaSO4↓+CuCl 3.H2C03=C02↑+H20 (5)NaCI +AgNO,=AgCl+NaNO 4.CaC0,高温Ca0+c0,↑ 五、其他类 1.(1)C0,+Ca(0H),=CaC03↓+H,0 5.2NaHC0,△Na,C0,+C0,↑+H,0 (2)2Na0H+CO,==Na2C03+H20 6.Ca(HC03)2=CaC03↓+C02↑+H,0 2.(1)Fe,0,+3C0高温2Fe+3C0, 7.C,(0H),C0,A2Cu0+C0,↑+H,0 (2)Fe,0,+4C0高温 =3Fe +4CO, 三、置换反应 (3)Cu0+C0△Cu+C0, 1.(1)Zn +H,SO,=ZnSO,+H, (2)Zn +2HCI ZnCL2+H,↑ 3.(1)CH+20,点 C02+2H20 (3)fe+H2S0,—FeS04+H2↑ (2)C,H0H+30,点燃2C0,+3H,0 (4)Fe +2HCl =FeCl2 +H (5)Mg+H,SO=MgSO +H, 第一单元走进化学世界 -、1.D2.C3.A4.B5.A6.B7.C8.B9.D (6)Mg +2HCI=MgCl2 +H2 (7)2Al+3H,S0,=AL2(S04)3+3H2↑ 10.B11.D12.D13.C14.C15.D16.C 17.C (8)2A1+6HCI= =2A1Cl3+3H2↑ 二、18.(1)③(2)④(3)①(4)②(5)⑥(6)⑤ (9)Cr +2HCI=CrCl2 +H2 19.(1)B(2)I(3)H、B(4)F(5)G(6)A 2.(1)Fe CuSO FeSO+Cu 第二单元我们周围的空气 (2)Cu +2AgNO;=Cu(NO3 )2 +2Ag 基础过关 (3)2A1+3CuS04==Al2(S04)3+3Cu -、1.A2.A3.C4.A5.A6.C7.D8.C9.C (4