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Complete the reaction, i. H(3)BO(3)ove...

Complete the reaction,
i. `H_(3)BO_(3)overset(373K)toA+H_(2)O`
ii. `Aoverset(413K)toB+H_(2)O`
iii. `Boverset("Red hot")toC+H_(2)O`

Text Solution

Verified by Experts

Boric acid when heated at 373 K gives metaboric acid (A) and A heated at 413 K it gives tetraboric acid (B).B heated at red hot it gives boric anhydride (C).
`4H_(3)BO_(3)underset(373K)(to)underset((A))(4HBO_(2))+H_(2)O`
`4HBO_(2)overset(413K)(to)underset((B))(H_(2)B_(4)O_(7))+H_(2)O`
`H_(2)B_(4)O_(7)overset("Red hot")(to)underset((C))(2B_(2)O_(3))+H_(2)O`
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