... (C) Na2CO3 2CO3, KCl, CH3COONa, NH4Cl, NaHSO4, C6 H5 (A) Na2CO3, C6 H5ONa, CH3COONa (B) Na2CO3, NH4Cl, KCl (C) KCl, C6 H5ONa, CH3COONa (D) NH4Cl, CH3COONa, NaHSO4 N CH3 (A) 3, (B) O Na2CO3, ZnCl2, ... 2HNO3 + Cu(OH)2 Cu(NO3)2 + 2H2O (C) CH3COONa + HCl CH3COOH + NaCl (D) 3HCl + Fe(OH)3 FeCl3 + 3H2O U Cu2+ + H2S CuS + 2H+? (A) H2S + Cu(OH)2 CuS + H2O (B) H2S + CuCl2 CuS + 2HCl (C) H2S + CuCO3 CuS ... + CO2 (D) H2S + CuO CuS + H2O V HCO3 + OH CO32 + H2O? (A) 2NaHCO3 + Ca(OH)2 CaCO3 + Na2CO3 + 2H2O (B) 2NaHCO3 + KOH Na2CO3 + K2CO3 + 2H2O (C) Ca(HCO3)2 + Ca(OH)2 CaCO3 + 2H2O (D) NaHCO3 + HCl...