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四川省成都市川師大實(shí)外校20xx屆高三9月月考化學(xué)試題-word版含-資料下載頁

2025-08-04 15:03本頁面
  

【正文】 __________________________ (4) _____________________________________ (5) ________________________________________________________________________。(6) __________________________________ 23.(13分)I. (1) ________。 (2) ________→________。(3) _______________________ (4) ________ II.(1) ________ 影響。(2) ________→________。(3) ________ (4) ① ________KMnO4+________K2S+______( )===________K2MnO4+________K2SO4+________S↓+______( )。②________ 。24.(17分)(1) (2) _________ (填序號(hào));(3) ①_________、_________(填化學(xué)式), _________;②正極:_________ ;負(fù)極:_________ ;③ ④ 9月月考化學(xué)參考答案12345678910DCBDBDCAAA11121314151617181920CABDABBADC21.(1) ①Cu2++2H2O≒Cu(OH)2+2H+②Ba2++SO+2OH-+Cu2+===BaSO4↓+Cu(OH)2↓(2) ①2H++SO+2OH-+Ba2+===BaSO4↓+2H2O Ba2++SO===BaSO4↓②Al3++2SO+4OH-+2Ba2+===2BaSO4↓+AlO+2H2O Al3++3AlO+6H2O===4Al(OH)3↓(3) 2OH-+Ca2++2HCO===CaCO3↓+2H2O+CO22. (1)Ba(NO3)2 HCl HNO3 Br2 AgNO3(2)SO SO Cl-(3)BaSO3+2H+===Ba2++SO2↑+H2O(4)中和OH-,防止對(duì)Cl-的檢驗(yàn)產(chǎn)生干擾(5)會(huì)使SO對(duì)SO的檢驗(yàn)產(chǎn)生干擾,不能確定SO和SO是否存在(6)SO2+Br2+2H2O===4H++SO+2Br-23.I. (1)H2O2  (2) H2CrO4 Cr(OH)3  (3) 2H2CrO4+3H2O2===2C r(OH)3↓+3O 2↑+2H2O(4) II.(1)酸堿性  (2) MnO Mn2+ (3) a  (4) ① 28 5 24KOH 28 3 2 12H2O  ② 23.I. (1) 2Cl-+2H2OCl2↑+H2↑+2OH-(2) ③①②(3) ①Cl2 H2 a%<b%②O2+4e+2H2O=4OH 2H24e+4OH=4H2O③C3H820e+26OH=3CO32+17H2O④NaCl+H2O NaClO+H2↑
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