The Total solution for NCERT class 6-12
Why is it necessary touse acetic acid and not sulphuric acid for acidification of sodium extract fortesting sulphur by lead acetate test?
Although the addition ofsulphuric acid will precipitate lead sulphate, the addition of acetic acid willensure a complete precipitation of sulphur in the form of lead sulphate due tocommon ion effect. Hence, it is necessary to use acetic acid for acidificationof sodium extract for testing sulphur by lead acetate test.