How to convert boric acid to boric oxide

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Discussion Overview

The discussion centers around the conversion of boric acid to boric oxide, exploring various methods and the implications of certain chemical reactions. Participants are examining a specific procedure involving methanol and concentrated sulfuric acid, as well as the potential interference from metals like barium and copper.

Discussion Character

  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant describes a method involving the addition of methanol and concentrated sulfuric acid to boric acid, followed by heating and igniting the evolved vapors.
  • Another participant questions the rationale behind using methanol and sulfuric acid, suggesting that the volatility of the product is significant to the method.
  • A different participant recalls that roasting boric acid is a more traditional method for converting it to boric oxide, implying that the described procedure may not be appropriate.
  • Concerns are raised about the effectiveness of the proposed method in the presence of metals like copper and barium, with a participant indicating that these metals could interfere with the reaction.

Areas of Agreement / Disagreement

Participants express differing views on the appropriate method for converting boric acid to boric oxide, with no consensus on the effectiveness of the described procedure or the role of the interfering metals.

Contextual Notes

The discussion highlights potential limitations in the proposed method, including the need for clarification on the role of methanol and sulfuric acid, as well as the implications of metal interference, which remain unresolved.

lmenwe
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How to convert boric acid to boric oxide?
To a few crystals of boric acid in a test-tube add a little methanol and some concentrated sulphuric acid. Heat and ignite the vapour evolved. Why should barium and copper interfere in this test?
 
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Well, what do you think? You need to show your thoughts/ideas on this question, before you get help.
 
lmenwe said:
How to convert boric acid to boric oxide?
To a few crystals of boric acid in a test-tube add a little methanol and some concentrated sulphuric acid. Heat and ignite the vapour evolved. Why should barium and copper interfere in this test?
i really want to know how..
 
Wow, there are a lot of views on this and only one response!

Why do you think that methanol and sulfuric acid were added? The product is volatile (it evaporates). This volatility is key to the method.

Is this any help?
 
What is this question about? IIRC to convert boric acid to boric oxide you should roast it. Procedure listed is a test for boric acid presence.
 
Yes, but the method he is following involves reacting it with methanol and sulfuric acid followed by ignition. His method won't work is metals like copper or barium are present and he needs to figure out why...
 

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