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How is boric acid extracted from borax ?...

How is boric acid extracted from borax ?

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Boric acid can be extracted from borax and colemanite.
`Na_(2)B_(4)O_(7)+H_(2)SO_(4)+5H_(2)O to Na_(2)SO_(4)+4H_(3)BO_(3)`
`Ca_(2)B_(6)O_(11)+11H_(2)SO_(4)+SO_(2)to Ca(HSO_(3))_(2)+6H_(3)BO_(3)`
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