Orthoboric acid when heated to red hot gives Options: A . &nbsp Metaboric acid B . &nbsp Metaboric acid C . &nbsp Boron and water D . &nbsp Boric anhydride

Answer: Option D : D H 3 B O 3 100 ∘ C − −− → H B O 2 160 ∘ C − −− → H 2 B 4 O 7 + H 2 O ↓ 2 B 2 O 3 + H 2 O

Orthoboric acid when heated to red hot gives

Question -

Orthoboric acid when heated to red hot gives

Options:

A . Metaboric acid

B . Metaboric acid

C . Boron and water

D . Boric anhydride

Answer: Option D
:
D

$H_{3} B O_{3} 100^{\circ} C - -- \to H B O_{2} 160^{\circ} C - -- \to H_{2} B_{4} O_{7} + H_{2} O ↓ 2 B_{2} O_{3} + H_{2} O$

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