2019甘肃兰州中考化学试题及解析

2019A1.1001002.3.H1C12N14O16Mg24P31S32Fe56Cu64Zn65251~12113~252381.A.B.C.D.2.A.B.C.D.3.2018A.B.TC.D.4.2018A.B.C.D.5.6.A.B.C.D.7.A.B.C.D.8.A.BB.C.5D.10.81g9.BaTiO3+4xA.1B.2C.3D.410.PM2.5PM2.5particulatematter2.5PM2.5A.B.C.D.11.A.B.C.50mL50mL100mLD.12.A.B.C.23D.13.A.B.C.D.CO2CO14.Hg4HgS+4CaO=4Hg+3X+CaSO4XA.CaSB.SO2C.SO3D.CaSO315.A.B.C.D.16.ABCD17.C18H34O2A.B.C.54D.9:118.A.B.C.D.19.A.B.+1C.D.20.ACaCl2BKOHKClCNaClNa2CO3DO2CO21.A.CaCO3CaOB.CO2COC.H2SO4H2OD.CuCu(OH)222.A.B.C.D.23.A.B.C.HClNa2SO4Ba(OH)2D.24.A.B.C.D.25./g20m86/g4282A.2gB.C.1:7D.41726.41223427.3CONK12328.5123410mL29.5ABCDEACE1AE2EBCA31530.41231.4abc1Pt1bc=2t2abc3t250gb50g4bab32.720181Cd+2220334ABCD1A2B3C4D34.16ABCDEFGH12AC3AEFGH4pH=721035.4201712C3H8NO5P1201.%333.836.61060g101010101010g9.358.78.057.46.756.75122018A25112113252381234567ACBDCDA891011121314DCBAABA15161718192041726.2SiCH4Fe2+P+52O5(14)27.CO2N2KNO3(13)28.20mL()(15)29.FeNa2CO3K2CO3Na2CO3+Ca(OH)2=CaCO3+2NaOH(K2CO3+Ca(OH)2=CaCO3+2KOH)(215)31530.A(14)31.=bac(cab)75g(14)32.HClCdCl2+2NaOH=Cd(OH)2+2NaCl()(217)22033.(14)34.(0.51)2KClO32KCl+3O22NaOH+SO2=Na2SO3+H2O(215)BE(1)(1)CaCO3+2HCl=CaCl2+H2O+CO2(2)b(1)efcdefc(2)(1)H2O+CO2=H2CO3(2)21035.9:20(1)18.3(1)33.8g18.3=6.2g(2)36.6.75g3.25g1103.25100=32.51xZn+H2SO4====ZnSO4+H265983.25gx3.25g65=x981x=4.9g150g4.9g100=9.81()1