Question

write the procedure to prepare from sodium sulphate from suitable reactants by titration method?


Give relavent answers.​

Answer 1

take some amount of NaOH in a conical flask .

add a drop of phenolphtalein to it then, the solution changes to pink colour.

now take a burrete and fill it with H₂SO₄ .

next add sulphuric acid to the solution in the flask drop by drop till the pink colour goes away.(if sulphuric acid is added in excess then sodium bisulphate is formed)

now take the solution formed in a china dish and slowly heat the solution till the crystals form and stop heating and let it cool. then the crystals of Na₂SO₄ are formed with water of crystallisation. if you the heat the crystals anhydrous sodium sulphate will be left over.

equation:-2NaOH+H₂SO₄ --> Na₂SO₄+2H₂O

HOPE THIS MAY HELP YOU.