What are possible impurities in the preparation of NH4BF4? Prepared with NH4F, boric acid, and H2SO4....
What are possible impurities in the preparation of NH4BF4? Prepared with NH4F, boric acid, and H2SO4. What are ways to lessen these impurities?
Homework Answers
The main impurities formed during preparation of NH4BF4 from Boric acid, NH4F and H2SO4 are:-
1) Acidic impurities:- The product NH4BF4 formed from the reaction may include acid and hence it is removed by washing with acetone.
2) salts :- A few salts may be formed and thus NH4BF4 is purified by dissolving it in hot water containing concentrated ammonia, heating to precipitate any silica, then filtering and evaporating.
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What are possible impurities in the preparation of NH4BF4?
Prepared with NH4F, boric acid, and H2SO4....
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