Arkansas State University Department of Chemistry and Physics

1.  Na₂O   +   H₂O  g  2 NaOH
 basic oxide of nonacidic cation gives hydroxide in water
 

2.  I₂O₅   +   H₂O  g  2 HIO₃
acidic oxide with water gives oxoacid
 

3.   CO   +   H₂O  g  no reaction
non-reactive oxide (one of three listed in class)
 

4.   CaO   +   CO₂  g  CaCO₃
basic oxide    acidic oxide
 

5.   FeO   +   SO₃     g  FeSO₄
basic oxide    acidic oxide
 

6.   RuO₄    +  P₄O₁₀    g  no reaction
acidic oxide    acidic oxide
 

7.   2 CrO   +  TiO₂   g Cr₂TiO₄
basic oxide    acidic oxide
 

8.   Fe₂O₃    +   6  H⁺   g  3 H₂O   +  2 Fe⁺³
basic oxide of moderately acidic cation dissolves in strong acid to give water and metal ions
 

9.    Fe₂O₃   +   H₂O  g    no reaction
basic oxide of moderately acidic cation - insoluble in water
 

10.  2 BeO    +    SiO₂    g  Be₂SiO₄
basic oxide    acidic oxide