1.
____Ca(OH)2 + ____SO2 →
2.
____HNO3 + ____CuO →
3.
____Na2O + ____H2O →
4.
____H2SO4 + ____ZnO →
5.
____Ca(OH)2 + ____CO2 →
6.
____ZnO + ____NaOH →
7.
____HNO3 + ____Cr2O3 →
8.
____HCl + ____FeO →
9.
____LiOH + ____SO3 →
10.
____K2O + ____ZnO →
11.
____H2SO4 + ____K2O →
12.
____H2SO4 + ____Al2O3 →
13.
____HNO3 + ____Na2O →
14.
____NaOH + ____SO2 →
15.
____CH3COOH + ____K2O →