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一、判断复分解反应化学方程式是否正确例1 (2005年河南省)下列做法和对应的化学方程式均正确的是( ) (A)用稀盐酸除去铁制品表面的锈: Fe2O3+4HCl=2FeCl2+3H2O (B)向纯碱溶液中滴加澄清石灰水: Na2CO3+Ca(OH)2=CaCO3↓+2NaOH (C)医疗上用氢氧化镁中和过多胃酸:
I. Judging whether the chemical equation of metathesis reaction is correct Example 1 (Henan Province, 2005) The following practices and corresponding chemical equations are correct () (A) Remove rust on the surface of iron products with dilute hydrochloric acid: Fe2O3+4HCl=2FeCl2+3H2O (B) Adding clarified lime water to the soda solution: Na2CO3+Ca(OH)2=CaCO3↓+2NaOH (C) Neutralizing too much gastric acid with magnesium hydroxide: