Complete and balance the following equations :
(a) NaOH+.............⟶ Na2SO4 + H2O
(b) Ca(OH)2 + ............. ⟶ CaCO3 + H2O
Balance the following chemical equations. [3 MARKS]
1. HNO3+Ca(OH)2→Ca(NO3)2+H2O 2. NaOH+H2SO4→Na2SO4+H2O 3. MnO2+HCl→MnCl2+Cl2+H2O