How to convert boric acid to boric oxide

[lmenwe]

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?

 

[siddharth]

Well, what do you think? You need to show your thoughts/ideas on this question, before you get help.

 

[ronald99]

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..

 

[chemisttree]

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?

 

[Borek]

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.

 

[chemisttree]

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...