2017年达州市中考化学试题

20174075H-1C-12O-16Na-23Cl-35.5Fe-56Zn-653241ABCD2ABpHCD3ABCD420175A124BC2H4CD53g8.8g5.4gA.CHOB.O2CO21411C.O2H2O76D.CH146ANa2CO3HClBaCl2NaClBNaOHFeCl3HClHNO3CNa2CO3NaClNa2SO4Ba(OH)2DNaOHBa(NO3)2NaClMgSO47()ACO(CO2)O2BNaCl(Na2CO3)CaCl2CKNO3K2SO4Ba(NO3)2DFeCl2(CuCl2)8ABCDABCD621279432104AX114XYZXYXt2t325%Xt1t3XYZt1124()2CrO3()+3C2H5OH+3H2SO4=Cr2(SO4)3()+3CH3CHO+6XX135146A-FBCDEBDDEABCEF22117159aFbcH2H2OHClH2Fe2O3H2158ABCDEHClNaClNaClCaCl2NaClCaCl2Na2CO3NaClNa2CO31716NaClNa2CO34.4gCO2100g21.1%NaClgNaCl201732412345678BDCBDACD62127943PNH4+2CH4Al+32O31049ACBCD114YX=Z20%Z124H2O135Fe+Cu(NO3)2=Cu+Fe(NO3)21462H2O2===MnO22H2O+O2CuCl2+Ca(OH)2=Cu(OH)2CaCl222117159BCBDc3H2+Fe2O3===2Fe+3H2O158Fe2+6HCl+Fe2O3=2FeCl3+3H2O17167.3g47%xyzNa2CO3+2HCl=2NaCl+H2O+CO21067311744xzy4.4g106x=73z=117y=444.4gx=10.6gy=11.7gz=7.3g100g21.1%-11.7g=9.4gNaCl=9.4g9.4g+10.6g100%=47%