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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: metallurgy on February 27, 2020, 04:17:50 AM

Title: Is NaF can precipitate in waste Sodium Sulphate? If so how?
Post by: metallurgy on February 27, 2020, 04:17:50 AM

Is NaF can precipitate in waste Sodium Sulphate? If so how? Or how to evaporate it? How to remove this impurity from sodium sulphate?

Title: Re: Is NaF can precipitate in waste Sodium Sulphate? If so how?
Post by: chenbeier on February 27, 2020, 10:39:42 AM

The soloubilities are different
NaF 42 g/l, Na₂SO₄ 281 g/l 20° C
Cooling  down, probably some flouride can be precipitated.