Sodium sulphite
`Na_(2)SO_(3)+HCl to_____ +H_(2)O+_________`

Sodium bisulphite NaHSO_(3)+HCl to ____+H_(2)O+______

Sodium carbonate Na_(2)CO_(3)+HCl to_______+H_(2)O+_______

Ammounium sulphate + alkali (NH_(4))_(2)SO_(4)+NaOH to_____+H_(2)O+____[g]

Red lead trilead tetroxide] Pb_(3)O_(4)+HCl to_____+H_(2)O+_______

Sodium thiosulphate soln . Na_(2)S_(2)O_(3)+HCl to .......... +...........+...........+............

Ammonium chloride + alkali NH_(4)Cl+Ca(OH)_(2) to_____+H_(2)O+_____[g]

Both sodium sulphate (Na_(2)SO_(4)) and sodium sulphite (Na_(2)SO_(3)) are the compounds of sodium, sulphur and oxygen. By calculations prove that the quantity of oxygen in sodium sulphate is greater than that in sodium sulphite. (R.A.M. : Na = 23, S = 32, O = 16.]

Na_(2) CO_(3). 10 H_(2) O is

In the test for iodine, I_(2) is treated with sodium thiosulphate (Na_(2)S_(2)O_(3)) : Na_(2)S_(2)O_(3)+I_(2) to NaI +..

Na_(2)CrO_(4)+HCl to H_(2)Cr_(2)O_(7)+Na_(2)SO_(4)